^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2011 STRATO. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) #include <linux/sched.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) #include <linux/pagemap.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) #include <linux/writeback.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9) #include <linux/blkdev.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/rbtree.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/slab.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/workqueue.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/btrfs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/sched/mm.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include "ctree.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "transaction.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "disk-io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include "locking.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include "ulist.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #include "backref.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #include "extent_io.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #include "qgroup.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) #include "block-group.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #include "sysfs.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /* TODO XXX FIXME
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * - subvol delete -> delete when ref goes to 0? delete limits also?
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * - reorganize keys
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * - compressed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) * - sync
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) * - copy also limits on subvol creation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) * - limit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) * - caches for ulists
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) * - performance benchmarks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) * - check all ioctl parameters
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) * Helpers to access qgroup reservation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) * Callers should ensure the lock context and type are valid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) static u64 qgroup_rsv_total(const struct btrfs_qgroup *qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) u64 ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) for (i = 0; i < BTRFS_QGROUP_RSV_LAST; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) ret += qgroup->rsv.values[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) #ifdef CONFIG_BTRFS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) static const char *qgroup_rsv_type_str(enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) if (type == BTRFS_QGROUP_RSV_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) return "data";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) if (type == BTRFS_QGROUP_RSV_META_PERTRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) return "meta_pertrans";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) if (type == BTRFS_QGROUP_RSV_META_PREALLOC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) return "meta_prealloc";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static void qgroup_rsv_add(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) struct btrfs_qgroup *qgroup, u64 num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) trace_qgroup_update_reserve(fs_info, qgroup, num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) qgroup->rsv.values[type] += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) static void qgroup_rsv_release(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) struct btrfs_qgroup *qgroup, u64 num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) trace_qgroup_update_reserve(fs_info, qgroup, -(s64)num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) if (qgroup->rsv.values[type] >= num_bytes) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) qgroup->rsv.values[type] -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) #ifdef CONFIG_BTRFS_DEBUG
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) WARN_RATELIMIT(1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) "qgroup %llu %s reserved space underflow, have %llu to free %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) qgroup->qgroupid, qgroup_rsv_type_str(type),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) qgroup->rsv.values[type], num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) qgroup->rsv.values[type] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static void qgroup_rsv_add_by_qgroup(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct btrfs_qgroup *dest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct btrfs_qgroup *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) for (i = 0; i < BTRFS_QGROUP_RSV_LAST; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) qgroup_rsv_add(fs_info, dest, src->rsv.values[i], i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) static void qgroup_rsv_release_by_qgroup(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) struct btrfs_qgroup *dest,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) struct btrfs_qgroup *src)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) for (i = 0; i < BTRFS_QGROUP_RSV_LAST; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) qgroup_rsv_release(fs_info, dest, src->rsv.values[i], i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) static void btrfs_qgroup_update_old_refcnt(struct btrfs_qgroup *qg, u64 seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) int mod)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) if (qg->old_refcnt < seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) qg->old_refcnt = seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) qg->old_refcnt += mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) static void btrfs_qgroup_update_new_refcnt(struct btrfs_qgroup *qg, u64 seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) int mod)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (qg->new_refcnt < seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) qg->new_refcnt = seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) qg->new_refcnt += mod;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) static inline u64 btrfs_qgroup_get_old_refcnt(struct btrfs_qgroup *qg, u64 seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) if (qg->old_refcnt < seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) return qg->old_refcnt - seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) static inline u64 btrfs_qgroup_get_new_refcnt(struct btrfs_qgroup *qg, u64 seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) if (qg->new_refcnt < seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) return qg->new_refcnt - seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) * glue structure to represent the relations between qgroups.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct btrfs_qgroup_list {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) struct list_head next_group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) struct list_head next_member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) struct btrfs_qgroup *group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct btrfs_qgroup *member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) static inline u64 qgroup_to_aux(struct btrfs_qgroup *qg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) return (u64)(uintptr_t)qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) static inline struct btrfs_qgroup* unode_aux_to_qgroup(struct ulist_node *n)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) return (struct btrfs_qgroup *)(uintptr_t)n->aux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) qgroup_rescan_init(struct btrfs_fs_info *fs_info, u64 progress_objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) int init_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) static void qgroup_rescan_zero_tracking(struct btrfs_fs_info *fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) /* must be called with qgroup_ioctl_lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) static struct btrfs_qgroup *find_qgroup_rb(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) struct rb_node *n = fs_info->qgroup_tree.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) while (n) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) qgroup = rb_entry(n, struct btrfs_qgroup, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) if (qgroup->qgroupid < qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) n = n->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) else if (qgroup->qgroupid > qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) n = n->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) return qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) /* must be called with qgroup_lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) static struct btrfs_qgroup *add_qgroup_rb(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct rb_node **p = &fs_info->qgroup_tree.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct rb_node *parent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) while (*p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) parent = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) qgroup = rb_entry(parent, struct btrfs_qgroup, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (qgroup->qgroupid < qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) p = &(*p)->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) else if (qgroup->qgroupid > qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) p = &(*p)->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) return qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) qgroup = kzalloc(sizeof(*qgroup), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return ERR_PTR(-ENOMEM);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) qgroup->qgroupid = qgroupid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) INIT_LIST_HEAD(&qgroup->groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) INIT_LIST_HEAD(&qgroup->members);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) INIT_LIST_HEAD(&qgroup->dirty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) rb_link_node(&qgroup->node, parent, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) rb_insert_color(&qgroup->node, &fs_info->qgroup_tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) return qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) static void __del_qgroup_rb(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct btrfs_qgroup *qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct btrfs_qgroup_list *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) list_del(&qgroup->dirty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) while (!list_empty(&qgroup->groups)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) list = list_first_entry(&qgroup->groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct btrfs_qgroup_list, next_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) list_del(&list->next_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) list_del(&list->next_member);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) kfree(list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238) while (!list_empty(&qgroup->members)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) list = list_first_entry(&qgroup->members,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct btrfs_qgroup_list, next_member);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) list_del(&list->next_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) list_del(&list->next_member);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) kfree(list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) /* must be called with qgroup_lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) static int del_qgroup_rb(struct btrfs_fs_info *fs_info, u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250) struct btrfs_qgroup *qgroup = find_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) rb_erase(&qgroup->node, &fs_info->qgroup_tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256) __del_qgroup_rb(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) /* must be called with qgroup_lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) static int add_relation_rb(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) u64 memberid, u64 parentid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) struct btrfs_qgroup *member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) struct btrfs_qgroup *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) struct btrfs_qgroup_list *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) member = find_qgroup_rb(fs_info, memberid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) parent = find_qgroup_rb(fs_info, parentid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) if (!member || !parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) list = kzalloc(sizeof(*list), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274) if (!list)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) list->group = parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) list->member = member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) list_add_tail(&list->next_group, &member->groups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) list_add_tail(&list->next_member, &parent->members);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) /* must be called with qgroup_lock held */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) static int del_relation_rb(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) u64 memberid, u64 parentid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) struct btrfs_qgroup *member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) struct btrfs_qgroup *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct btrfs_qgroup_list *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) member = find_qgroup_rb(fs_info, memberid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) parent = find_qgroup_rb(fs_info, parentid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295) if (!member || !parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) list_for_each_entry(list, &member->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) if (list->group == parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) list_del(&list->next_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) list_del(&list->next_member);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302) kfree(list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309) #ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) int btrfs_verify_qgroup_counts(struct btrfs_fs_info *fs_info, u64 qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311) u64 rfer, u64 excl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) qgroup = find_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) if (qgroup->rfer != rfer || qgroup->excl != excl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) * The full config is read in one go, only called from open_ctree()
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) * It doesn't use any locking, as at this point we're still single-threaded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) int btrfs_read_qgroup_config(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) struct btrfs_key found_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) struct btrfs_root *quota_root = fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333) struct btrfs_path *path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) struct extent_buffer *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) u64 flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) u64 rescan_progress = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343) fs_info->qgroup_ulist = ulist_alloc(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) if (!fs_info->qgroup_ulist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350) if (!path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) ret = btrfs_sysfs_add_qgroups(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) /* default this to quota off, in case no status key is found */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) fs_info->qgroup_flags = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) * pass 1: read status, all qgroup infos and limits
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) key.type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) key.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) ret = btrfs_search_slot_for_read(quota_root, &key, path, 1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) l = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) btrfs_item_key_to_cpu(l, &found_key, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) if (found_key.type == BTRFS_QGROUP_STATUS_KEY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379) struct btrfs_qgroup_status_item *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) ptr = btrfs_item_ptr(l, slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) struct btrfs_qgroup_status_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) if (btrfs_qgroup_status_version(l, ptr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) BTRFS_QGROUP_STATUS_VERSION) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) btrfs_err(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) "old qgroup version, quota disabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) if (btrfs_qgroup_status_generation(l, ptr) !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391) fs_info->generation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) btrfs_err(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) "qgroup generation mismatch, marked as inconsistent");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) fs_info->qgroup_flags = btrfs_qgroup_status_flags(l,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) rescan_progress = btrfs_qgroup_status_rescan(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) goto next1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) if (found_key.type != BTRFS_QGROUP_INFO_KEY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) found_key.type != BTRFS_QGROUP_LIMIT_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) goto next1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406) qgroup = find_qgroup_rb(fs_info, found_key.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407) if ((qgroup && found_key.type == BTRFS_QGROUP_INFO_KEY) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408) (!qgroup && found_key.type == BTRFS_QGROUP_LIMIT_KEY)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409) btrfs_err(fs_info, "inconsistent qgroup config");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) if (!qgroup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) qgroup = add_qgroup_rb(fs_info, found_key.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) if (IS_ERR(qgroup)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415) ret = PTR_ERR(qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) ret = btrfs_sysfs_add_one_qgroup(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) switch (found_key.type) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) case BTRFS_QGROUP_INFO_KEY: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) struct btrfs_qgroup_info_item *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) ptr = btrfs_item_ptr(l, slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) struct btrfs_qgroup_info_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) qgroup->rfer = btrfs_qgroup_info_rfer(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) qgroup->rfer_cmpr = btrfs_qgroup_info_rfer_cmpr(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) qgroup->excl = btrfs_qgroup_info_excl(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) qgroup->excl_cmpr = btrfs_qgroup_info_excl_cmpr(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) /* generation currently unused */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) case BTRFS_QGROUP_LIMIT_KEY: {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) struct btrfs_qgroup_limit_item *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) ptr = btrfs_item_ptr(l, slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) struct btrfs_qgroup_limit_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) qgroup->lim_flags = btrfs_qgroup_limit_flags(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442) qgroup->max_rfer = btrfs_qgroup_limit_max_rfer(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) qgroup->max_excl = btrfs_qgroup_limit_max_excl(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) qgroup->rsv_rfer = btrfs_qgroup_limit_rsv_rfer(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) qgroup->rsv_excl = btrfs_qgroup_limit_rsv_excl(l, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449) next1:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) ret = btrfs_next_item(quota_root, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459) * pass 2: read all qgroup relations
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) key.type = BTRFS_QGROUP_RELATION_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) key.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) ret = btrfs_search_slot_for_read(quota_root, &key, path, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) l = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) btrfs_item_key_to_cpu(l, &found_key, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) if (found_key.type != BTRFS_QGROUP_RELATION_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) goto next2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475) if (found_key.objectid > found_key.offset) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) /* parent <- member, not needed to build config */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) /* FIXME should we omit the key completely? */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478) goto next2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481) ret = add_relation_rb(fs_info, found_key.objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) found_key.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) if (ret == -ENOENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) "orphan qgroup relation 0x%llx->0x%llx",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) found_key.objectid, found_key.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) ret = 0; /* ignore the error */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491) next2:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) ret = btrfs_next_item(quota_root, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) fs_info->qgroup_flags |= flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) if (!(fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_ON))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) clear_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) else if (fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) ret >= 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) ret = qgroup_rescan_init(fs_info, rescan_progress, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) ulist_free(fs_info->qgroup_ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) fs_info->qgroup_ulist = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) btrfs_sysfs_del_qgroups(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) return ret < 0 ? ret : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 515) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 517) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) * Called in close_ctree() when quota is still enabled. This verifies we don't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) * leak some reserved space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) * Return false if no reserved space is left.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * Return true if some reserved space is leaked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) bool btrfs_check_quota_leak(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) bool ret = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * Since we're unmounting, there is no race and no need to grab qgroup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) * lock. And here we don't go post-order to provide a more user
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * friendly sorted result.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) for (node = rb_first(&fs_info->qgroup_tree); node; node = rb_next(node)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) qgroup = rb_entry(node, struct btrfs_qgroup, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) for (i = 0; i < BTRFS_QGROUP_RSV_LAST; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) if (qgroup->rsv.values[i]) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) ret = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) "qgroup %hu/%llu has unreleased space, type %d rsv %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) btrfs_qgroup_level(qgroup->qgroupid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) btrfs_qgroup_subvolid(qgroup->qgroupid),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) i, qgroup->rsv.values[i]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) * This is called from close_ctree() or open_ctree() or btrfs_quota_disable(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) * first two are in single-threaded paths.And for the third one, we have set
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) * quota_root to be null with qgroup_lock held before, so it is safe to clean
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) * up the in-memory structures without qgroup_lock held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) void btrfs_free_qgroup_config(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) struct rb_node *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) while ((n = rb_first(&fs_info->qgroup_tree))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) qgroup = rb_entry(n, struct btrfs_qgroup, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) rb_erase(n, &fs_info->qgroup_tree);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) __del_qgroup_rb(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) btrfs_sysfs_del_one_qgroup(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) kfree(qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) * We call btrfs_free_qgroup_config() when unmounting
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) * filesystem and disabling quota, so we set qgroup_ulist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) * to be null here to avoid double free.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578) ulist_free(fs_info->qgroup_ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) fs_info->qgroup_ulist = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) btrfs_sysfs_del_qgroups(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) static int add_qgroup_relation_item(struct btrfs_trans_handle *trans, u64 src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) u64 dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) struct btrfs_root *quota_root = trans->fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595) key.objectid = src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) key.type = BTRFS_QGROUP_RELATION_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) key.offset = dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) ret = btrfs_insert_empty_item(trans, quota_root, path, &key, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601) btrfs_mark_buffer_dirty(path->nodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607) static int del_qgroup_relation_item(struct btrfs_trans_handle *trans, u64 src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) u64 dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611) struct btrfs_root *quota_root = trans->fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) key.objectid = src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) key.type = BTRFS_QGROUP_RELATION_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) key.offset = dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) ret = btrfs_search_slot(trans, quota_root, &key, path, -1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632) ret = btrfs_del_item(trans, quota_root, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638) static int add_qgroup_item(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) struct btrfs_root *quota_root, u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) struct btrfs_qgroup_info_item *qgroup_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) struct btrfs_qgroup_limit_item *qgroup_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) struct extent_buffer *leaf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) if (btrfs_is_testing(quota_root->fs_info))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656) key.type = BTRFS_QGROUP_INFO_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) key.offset = qgroupid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) * Avoid a transaction abort by catching -EEXIST here. In that
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661) * case, we proceed by re-initializing the existing structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) * on disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) ret = btrfs_insert_empty_item(trans, quota_root, path, &key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) sizeof(*qgroup_info));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) if (ret && ret != -EEXIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) leaf = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) qgroup_info = btrfs_item_ptr(leaf, path->slots[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) struct btrfs_qgroup_info_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) btrfs_set_qgroup_info_generation(leaf, qgroup_info, trans->transid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) btrfs_set_qgroup_info_rfer(leaf, qgroup_info, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) btrfs_set_qgroup_info_rfer_cmpr(leaf, qgroup_info, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676) btrfs_set_qgroup_info_excl(leaf, qgroup_info, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) btrfs_set_qgroup_info_excl_cmpr(leaf, qgroup_info, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) btrfs_mark_buffer_dirty(leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) key.type = BTRFS_QGROUP_LIMIT_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) ret = btrfs_insert_empty_item(trans, quota_root, path, &key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) sizeof(*qgroup_limit));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) if (ret && ret != -EEXIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) leaf = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690) qgroup_limit = btrfs_item_ptr(leaf, path->slots[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) struct btrfs_qgroup_limit_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) btrfs_set_qgroup_limit_flags(leaf, qgroup_limit, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) btrfs_set_qgroup_limit_max_rfer(leaf, qgroup_limit, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) btrfs_set_qgroup_limit_max_excl(leaf, qgroup_limit, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) btrfs_set_qgroup_limit_rsv_rfer(leaf, qgroup_limit, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) btrfs_set_qgroup_limit_rsv_excl(leaf, qgroup_limit, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) btrfs_mark_buffer_dirty(leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) static int del_qgroup_item(struct btrfs_trans_handle *trans, u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709) struct btrfs_root *quota_root = trans->fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) key.type = BTRFS_QGROUP_INFO_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) key.offset = qgroupid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) ret = btrfs_search_slot(trans, quota_root, &key, path, -1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) ret = btrfs_del_item(trans, quota_root, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) key.type = BTRFS_QGROUP_LIMIT_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) ret = btrfs_search_slot(trans, quota_root, &key, path, -1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) ret = btrfs_del_item(trans, quota_root, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) static int update_qgroup_limit_item(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) struct btrfs_qgroup *qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) struct btrfs_root *quota_root = trans->fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct extent_buffer *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) struct btrfs_qgroup_limit_item *qgroup_limit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764) key.type = BTRFS_QGROUP_LIMIT_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) key.offset = qgroup->qgroupid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) ret = btrfs_search_slot(trans, quota_root, &key, path, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778) l = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) qgroup_limit = btrfs_item_ptr(l, slot, struct btrfs_qgroup_limit_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781) btrfs_set_qgroup_limit_flags(l, qgroup_limit, qgroup->lim_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) btrfs_set_qgroup_limit_max_rfer(l, qgroup_limit, qgroup->max_rfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) btrfs_set_qgroup_limit_max_excl(l, qgroup_limit, qgroup->max_excl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) btrfs_set_qgroup_limit_rsv_rfer(l, qgroup_limit, qgroup->rsv_rfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) btrfs_set_qgroup_limit_rsv_excl(l, qgroup_limit, qgroup->rsv_excl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) btrfs_mark_buffer_dirty(l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) static int update_qgroup_info_item(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) struct btrfs_qgroup *qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) struct btrfs_root *quota_root = fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) struct extent_buffer *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) struct btrfs_qgroup_info_item *qgroup_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) if (btrfs_is_testing(fs_info))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) key.type = BTRFS_QGROUP_INFO_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) key.offset = qgroup->qgroupid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) ret = btrfs_search_slot(trans, quota_root, &key, path, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) l = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) qgroup_info = btrfs_item_ptr(l, slot, struct btrfs_qgroup_info_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) btrfs_set_qgroup_info_generation(l, qgroup_info, trans->transid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) btrfs_set_qgroup_info_rfer(l, qgroup_info, qgroup->rfer);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829) btrfs_set_qgroup_info_rfer_cmpr(l, qgroup_info, qgroup->rfer_cmpr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) btrfs_set_qgroup_info_excl(l, qgroup_info, qgroup->excl);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) btrfs_set_qgroup_info_excl_cmpr(l, qgroup_info, qgroup->excl_cmpr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) btrfs_mark_buffer_dirty(l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) static int update_qgroup_status_item(struct btrfs_trans_handle *trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) struct btrfs_root *quota_root = fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) struct extent_buffer *l;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) struct btrfs_qgroup_status_item *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) key.type = BTRFS_QGROUP_STATUS_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) key.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) ret = btrfs_search_slot(trans, quota_root, &key, path, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) l = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) ptr = btrfs_item_ptr(l, slot, struct btrfs_qgroup_status_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) btrfs_set_qgroup_status_flags(l, ptr, fs_info->qgroup_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) btrfs_set_qgroup_status_generation(l, ptr, trans->transid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) btrfs_set_qgroup_status_rescan(l, ptr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) fs_info->qgroup_rescan_progress.objectid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) btrfs_mark_buffer_dirty(l);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882) * called with qgroup_lock held
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) static int btrfs_clean_quota_tree(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) struct btrfs_root *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) struct extent_buffer *leaf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) int nr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) path->leave_spinning = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900) key.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) key.type = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) ret = btrfs_search_slot(trans, root, &key, path, -1, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) leaf = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) nr = btrfs_header_nritems(leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) if (!nr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) * delete the leaf one by one
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) * since the whole tree is going
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) * to be deleted.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) path->slots[0] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) ret = btrfs_del_items(trans, root, path, 0, nr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) int btrfs_quota_enable(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931) struct btrfs_root *quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) struct btrfs_root *tree_root = fs_info->tree_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) struct btrfs_path *path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) struct btrfs_qgroup_status_item *ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) struct extent_buffer *leaf;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) struct btrfs_key found_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) struct btrfs_qgroup *qgroup = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) struct btrfs_trans_handle *trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940) struct ulist *ulist = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) * We need to have subvol_sem write locked, to prevent races between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946) * concurrent tasks trying to enable quotas, because we will unlock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947) * and relock qgroup_ioctl_lock before setting fs_info->quota_root
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) * and before setting BTRFS_FS_QUOTA_ENABLED.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950) lockdep_assert_held_write(&fs_info->subvol_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) if (fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) ulist = ulist_alloc(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) if (!ulist) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) ret = btrfs_sysfs_add_qgroups(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) * Unlock qgroup_ioctl_lock before starting the transaction. This is to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) * avoid lock acquisition inversion problems (reported by lockdep) between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) * qgroup_ioctl_lock and the vfs freeze semaphores, acquired when we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) * start a transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) * After we started the transaction lock qgroup_ioctl_lock again and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) * check if someone else created the quota root in the meanwhile. If so,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) * just return success and release the transaction handle.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) * Also we don't need to worry about someone else calling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) * btrfs_sysfs_add_qgroups() after we unlock and getting an error because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) * that function returns 0 (success) when the sysfs entries already exist.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) * 1 for quota root item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) * 1 for BTRFS_QGROUP_STATUS item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) * Yet we also need 2*n items for a QGROUP_INFO/QGROUP_LIMIT items
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) * per subvolume. However those are not currently reserved since it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987) * would be a lot of overkill.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) trans = btrfs_start_transaction(tree_root, 2);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) if (IS_ERR(trans)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993) ret = PTR_ERR(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994) trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) if (fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) fs_info->qgroup_ulist = ulist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002) ulist = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005) * initially create the quota tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) quota_root = btrfs_create_tree(trans, BTRFS_QUOTA_TREE_OBJECTID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) if (IS_ERR(quota_root)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) ret = PTR_ERR(quota_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) if (!path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) goto out_free_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) key.type = BTRFS_QGROUP_STATUS_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) key.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) ret = btrfs_insert_empty_item(trans, quota_root, path, &key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) sizeof(*ptr));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) leaf = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) ptr = btrfs_item_ptr(leaf, path->slots[0],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) struct btrfs_qgroup_status_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) btrfs_set_qgroup_status_generation(leaf, ptr, trans->transid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) btrfs_set_qgroup_status_version(leaf, ptr, BTRFS_QGROUP_STATUS_VERSION);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037) fs_info->qgroup_flags = BTRFS_QGROUP_STATUS_FLAG_ON |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) btrfs_set_qgroup_status_flags(leaf, ptr, fs_info->qgroup_flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) btrfs_set_qgroup_status_rescan(leaf, ptr, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) btrfs_mark_buffer_dirty(leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) key.objectid = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) key.type = BTRFS_ROOT_REF_KEY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) key.offset = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) ret = btrfs_search_slot_for_read(tree_root, &key, path, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050) if (ret > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051) goto out_add_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) while (1) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) leaf = path->nodes[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) btrfs_item_key_to_cpu(leaf, &found_key, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062) if (found_key.type == BTRFS_ROOT_REF_KEY) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) /* Release locks on tree_root before we access quota_root */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) ret = add_qgroup_item(trans, quota_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) found_key.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074) qgroup = add_qgroup_rb(fs_info, found_key.offset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) if (IS_ERR(qgroup)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) ret = PTR_ERR(qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) ret = btrfs_sysfs_add_one_qgroup(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) ret = btrfs_search_slot_for_read(tree_root, &found_key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) path, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) * Shouldn't happen, but in case it does we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) * don't need to do the btrfs_next_item, just
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) * continue.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1098) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1100) ret = btrfs_next_item(tree_root, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) out_add_root:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) ret = add_qgroup_item(trans, quota_root, BTRFS_FS_TREE_OBJECTID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) qgroup = add_qgroup_rb(fs_info, BTRFS_FS_TREE_OBJECTID);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118) if (IS_ERR(qgroup)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) ret = PTR_ERR(qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) ret = btrfs_sysfs_add_one_qgroup(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) * Commit the transaction while not holding qgroup_ioctl_lock, to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) * a deadlock with tasks concurrently doing other qgroup operations, such
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133) * adding/removing qgroups or adding/deleting qgroup relations for example,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) * because all qgroup operations first start or join a transaction and then
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) * lock the qgroup_ioctl_lock mutex.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) * We are safe from a concurrent task trying to enable quotas, by calling
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137) * this function, since we are serialized by fs_info->subvol_sem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1139) ret = btrfs_commit_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1140) trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1141) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1142) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1143) goto out_free_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1145) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1146) * Set quota enabled flag after committing the transaction, to avoid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1147) * deadlocks on fs_info->qgroup_ioctl_lock with concurrent snapshot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1148) * creation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1149) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1150) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1151) fs_info->quota_root = quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1152) set_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1153) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1155) ret = qgroup_rescan_init(fs_info, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1156) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1157) qgroup_rescan_zero_tracking(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1158) fs_info->qgroup_rescan_running = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1159) btrfs_queue_work(fs_info->qgroup_rescan_workers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1160) &fs_info->qgroup_rescan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1161) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1162)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1163) out_free_path:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1164) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1165) out_free_root:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1166) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1167) btrfs_put_root(quota_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1168) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1169) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1170) ulist_free(fs_info->qgroup_ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1171) fs_info->qgroup_ulist = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1172) btrfs_sysfs_del_qgroups(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1173) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1174) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1175) if (ret && trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1176) btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1177) else if (trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1178) ret = btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1179) ulist_free(ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1180) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1183) int btrfs_quota_disable(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1184) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1185) struct btrfs_root *quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1186) struct btrfs_trans_handle *trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1187) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1188)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1189) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1190) * We need to have subvol_sem write locked, to prevent races between
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1191) * concurrent tasks trying to disable quotas, because we will unlock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1192) * and relock qgroup_ioctl_lock across BTRFS_FS_QUOTA_ENABLED changes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1193) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1194) lockdep_assert_held_write(&fs_info->subvol_sem);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1196) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1197) if (!fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1198) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1199)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1200) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1201) * Unlock the qgroup_ioctl_lock mutex before waiting for the rescan worker to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1202) * complete. Otherwise we can deadlock because btrfs_remove_qgroup() needs
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1203) * to lock that mutex while holding a transaction handle and the rescan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1204) * worker needs to commit a transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1205) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1206) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1208) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1209) * Request qgroup rescan worker to complete and wait for it. This wait
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1210) * must be done before transaction start for quota disable since it may
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1211) * deadlock with transaction by the qgroup rescan worker.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1212) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1213) clear_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1214) btrfs_qgroup_wait_for_completion(fs_info, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1216) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1217) * 1 For the root item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1218) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1219) * We should also reserve enough items for the quota tree deletion in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1220) * btrfs_clean_quota_tree but this is not done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1221) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1222) * Also, we must always start a transaction without holding the mutex
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1223) * qgroup_ioctl_lock, see btrfs_quota_enable().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1224) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1225) trans = btrfs_start_transaction(fs_info->tree_root, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1226)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1227) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1228) if (IS_ERR(trans)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1229) ret = PTR_ERR(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1230) trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1231) set_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1232) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1233) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1234)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1235) if (!fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1236) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1237)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1238) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1239) quota_root = fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1240) fs_info->quota_root = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1241) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1242) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1244) btrfs_free_qgroup_config(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1245)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1246) ret = btrfs_clean_quota_tree(trans, quota_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1247) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1248) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1249) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1250) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1252) ret = btrfs_del_root(trans, "a_root->root_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1253) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1254) btrfs_abort_transaction(trans, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1255) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1256) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1257)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1258) list_del("a_root->dirty_list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1259)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1260) btrfs_tree_lock(quota_root->node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1261) btrfs_clean_tree_block(quota_root->node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1262) btrfs_tree_unlock(quota_root->node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1263) btrfs_free_tree_block(trans, quota_root, quota_root->node, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1264)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1265) btrfs_put_root(quota_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1266)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1267) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1268) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1269) if (ret && trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1270) btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1271) else if (trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1272) ret = btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1274) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1275) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1277) static void qgroup_dirty(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1278) struct btrfs_qgroup *qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1279) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1280) if (list_empty(&qgroup->dirty))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1281) list_add(&qgroup->dirty, &fs_info->dirty_qgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1282) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1283)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1284) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1285) * The easy accounting, we're updating qgroup relationship whose child qgroup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1286) * only has exclusive extents.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1287) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1288) * In this case, all exclusive extents will also be exclusive for parent, so
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1289) * excl/rfer just get added/removed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1290) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1291) * So is qgroup reservation space, which should also be added/removed to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1292) * parent.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1293) * Or when child tries to release reservation space, parent will underflow its
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1294) * reservation (for relationship adding case).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1295) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1296) * Caller should hold fs_info->qgroup_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1297) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1298) static int __qgroup_excl_accounting(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1299) struct ulist *tmp, u64 ref_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1300) struct btrfs_qgroup *src, int sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1301) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1302) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1303) struct btrfs_qgroup_list *glist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1304) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1305) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1306) u64 num_bytes = src->excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1307) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1308)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1309) qgroup = find_qgroup_rb(fs_info, ref_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1310) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1311) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1312)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1313) qgroup->rfer += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1314) qgroup->rfer_cmpr += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1315)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1316) WARN_ON(sign < 0 && qgroup->excl < num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1317) qgroup->excl += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1318) qgroup->excl_cmpr += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1319)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1320) if (sign > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1321) qgroup_rsv_add_by_qgroup(fs_info, qgroup, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1322) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1323) qgroup_rsv_release_by_qgroup(fs_info, qgroup, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1324)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1325) qgroup_dirty(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1326)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1327) /* Get all of the parent groups that contain this qgroup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1328) list_for_each_entry(glist, &qgroup->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1329) ret = ulist_add(tmp, glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1330) qgroup_to_aux(glist->group), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1331) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1332) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1333) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1334)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1335) /* Iterate all of the parents and adjust their reference counts */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1336) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1337) while ((unode = ulist_next(tmp, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1338) qgroup = unode_aux_to_qgroup(unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1339) qgroup->rfer += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1340) qgroup->rfer_cmpr += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1341) WARN_ON(sign < 0 && qgroup->excl < num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1342) qgroup->excl += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1343) if (sign > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1344) qgroup_rsv_add_by_qgroup(fs_info, qgroup, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1345) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1346) qgroup_rsv_release_by_qgroup(fs_info, qgroup, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1347) qgroup->excl_cmpr += sign * num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1348) qgroup_dirty(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1349)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1350) /* Add any parents of the parents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1351) list_for_each_entry(glist, &qgroup->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1352) ret = ulist_add(tmp, glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1353) qgroup_to_aux(glist->group), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1354) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1355) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1356) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1357) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1358) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1359) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1360) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1361) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1362)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1364) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1365) * Quick path for updating qgroup with only excl refs.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1366) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1367) * In that case, just update all parent will be enough.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1368) * Or we needs to do a full rescan.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1369) * Caller should also hold fs_info->qgroup_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1370) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1371) * Return 0 for quick update, return >0 for need to full rescan
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1372) * and mark INCONSISTENT flag.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1373) * Return < 0 for other error.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1374) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1375) static int quick_update_accounting(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1376) struct ulist *tmp, u64 src, u64 dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1377) int sign)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1378) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1379) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1380) int ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1381) int err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1382)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1383) qgroup = find_qgroup_rb(fs_info, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1384) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1385) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1386) if (qgroup->excl == qgroup->rfer) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1387) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1388) err = __qgroup_excl_accounting(fs_info, tmp, dst,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1389) qgroup, sign);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1390) if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1391) ret = err;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1392) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1393) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1394) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1395) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1396) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1397) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1398) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1399) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1400)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1401) int btrfs_add_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1402) u64 dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1403) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1404) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1405) struct btrfs_qgroup *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1406) struct btrfs_qgroup *member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1407) struct btrfs_qgroup_list *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1408) struct ulist *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1409) unsigned int nofs_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1410) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1411)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1412) /* Check the level of src and dst first */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1413) if (btrfs_qgroup_level(src) >= btrfs_qgroup_level(dst))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1414) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1416) /* We hold a transaction handle open, must do a NOFS allocation. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1417) nofs_flag = memalloc_nofs_save();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1418) tmp = ulist_alloc(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1419) memalloc_nofs_restore(nofs_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1420) if (!tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1421) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1422)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1423) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1424) if (!fs_info->quota_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1425) ret = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1426) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1427) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1428) member = find_qgroup_rb(fs_info, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1429) parent = find_qgroup_rb(fs_info, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1430) if (!member || !parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1431) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1432) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1433) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1434)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1435) /* check if such qgroup relation exist firstly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1436) list_for_each_entry(list, &member->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1437) if (list->group == parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1438) ret = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1439) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1440) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1441) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1443) ret = add_qgroup_relation_item(trans, src, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1444) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1445) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1446)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1447) ret = add_qgroup_relation_item(trans, dst, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1448) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1449) del_qgroup_relation_item(trans, src, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1450) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1451) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1452)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1453) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1454) ret = add_relation_rb(fs_info, src, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1455) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1456) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1457) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1458) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1459) ret = quick_update_accounting(fs_info, tmp, src, dst, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1460) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1461) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1462) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1463) ulist_free(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1464) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1465) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1466)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1467) static int __del_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1468) u64 dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1469) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1470) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1471) struct btrfs_qgroup *parent;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1472) struct btrfs_qgroup *member;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1473) struct btrfs_qgroup_list *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1474) struct ulist *tmp;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1475) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1476) unsigned int nofs_flag;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1477) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1478) int ret2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1479)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1480) /* We hold a transaction handle open, must do a NOFS allocation. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1481) nofs_flag = memalloc_nofs_save();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1482) tmp = ulist_alloc(GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1483) memalloc_nofs_restore(nofs_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1484) if (!tmp)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1485) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1486)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1487) if (!fs_info->quota_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1488) ret = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1489) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1490) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1492) member = find_qgroup_rb(fs_info, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1493) parent = find_qgroup_rb(fs_info, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1494) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1495) * The parent/member pair doesn't exist, then try to delete the dead
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1496) * relation items only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1497) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1498) if (!member || !parent)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1499) goto delete_item;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1500)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1501) /* check if such qgroup relation exist firstly */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1502) list_for_each_entry(list, &member->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1503) if (list->group == parent) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1504) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1505) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1506) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1507) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1509) delete_item:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1510) ret = del_qgroup_relation_item(trans, src, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1511) if (ret < 0 && ret != -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1512) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1513) ret2 = del_qgroup_relation_item(trans, dst, src);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1514) if (ret2 < 0 && ret2 != -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1515) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1516)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1517) /* At least one deletion succeeded, return 0 */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1518) if (!ret || !ret2)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1519) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1521) if (found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1522) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1523) del_relation_rb(fs_info, src, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1524) ret = quick_update_accounting(fs_info, tmp, src, dst, -1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1525) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1526) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1527) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1528) ulist_free(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1529) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1530) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1531)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1532) int btrfs_del_qgroup_relation(struct btrfs_trans_handle *trans, u64 src,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1533) u64 dst)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1534) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1535) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1536) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1537)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1538) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1539) ret = __del_qgroup_relation(trans, src, dst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1540) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1541)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1542) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1543) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1544)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1545) int btrfs_create_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1546) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1547) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1548) struct btrfs_root *quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1549) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1550) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1551)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1552) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1553) if (!fs_info->quota_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1554) ret = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1555) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1556) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1557) quota_root = fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1558) qgroup = find_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1559) if (qgroup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1560) ret = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1561) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1562) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1564) ret = add_qgroup_item(trans, quota_root, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1565) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1566) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1567)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1568) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1569) qgroup = add_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1570) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1571)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1572) if (IS_ERR(qgroup)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1573) ret = PTR_ERR(qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1574) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1575) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1576) ret = btrfs_sysfs_add_one_qgroup(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1577) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1578) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1579) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1580) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1581)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1582) int btrfs_remove_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1583) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1584) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1585) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1586) struct btrfs_qgroup_list *list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1587) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1589) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1590) if (!fs_info->quota_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1591) ret = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1592) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1593) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1594)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1595) qgroup = find_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1596) if (!qgroup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1597) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1598) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1599) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1600)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1601) /* Check if there are no children of this qgroup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1602) if (!list_empty(&qgroup->members)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1603) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1604) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1605) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1606)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1607) ret = del_qgroup_item(trans, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1608) if (ret && ret != -ENOENT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1609) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1610)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1611) while (!list_empty(&qgroup->groups)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1612) list = list_first_entry(&qgroup->groups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1613) struct btrfs_qgroup_list, next_group);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1614) ret = __del_qgroup_relation(trans, qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1615) list->group->qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1616) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1617) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1618) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1620) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1621) del_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1622) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1623)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1624) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1625) * Remove the qgroup from sysfs now without holding the qgroup_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1626) * spinlock, since the sysfs_remove_group() function needs to take
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1627) * the mutex kernfs_mutex through kernfs_remove_by_name_ns().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1628) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1629) btrfs_sysfs_del_one_qgroup(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1630) kfree(qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1631) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1632) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1633) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1634) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1635)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1636) int btrfs_limit_qgroup(struct btrfs_trans_handle *trans, u64 qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1637) struct btrfs_qgroup_limit *limit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1638) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1639) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1640) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1641) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1642) /* Sometimes we would want to clear the limit on this qgroup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1643) * To meet this requirement, we treat the -1 as a special value
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1644) * which tell kernel to clear the limit on this qgroup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1645) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1646) const u64 CLEAR_VALUE = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1647)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1648) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1649) if (!fs_info->quota_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1650) ret = -ENOTCONN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1651) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1652) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1654) qgroup = find_qgroup_rb(fs_info, qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1655) if (!qgroup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1656) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1657) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1658) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1659)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1660) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1661) if (limit->flags & BTRFS_QGROUP_LIMIT_MAX_RFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1662) if (limit->max_rfer == CLEAR_VALUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1663) qgroup->lim_flags &= ~BTRFS_QGROUP_LIMIT_MAX_RFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1664) limit->flags &= ~BTRFS_QGROUP_LIMIT_MAX_RFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1665) qgroup->max_rfer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1666) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1667) qgroup->max_rfer = limit->max_rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1669) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1670) if (limit->flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1671) if (limit->max_excl == CLEAR_VALUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1672) qgroup->lim_flags &= ~BTRFS_QGROUP_LIMIT_MAX_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1673) limit->flags &= ~BTRFS_QGROUP_LIMIT_MAX_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1674) qgroup->max_excl = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1675) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1676) qgroup->max_excl = limit->max_excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1677) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1679) if (limit->flags & BTRFS_QGROUP_LIMIT_RSV_RFER) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1680) if (limit->rsv_rfer == CLEAR_VALUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1681) qgroup->lim_flags &= ~BTRFS_QGROUP_LIMIT_RSV_RFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1682) limit->flags &= ~BTRFS_QGROUP_LIMIT_RSV_RFER;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1683) qgroup->rsv_rfer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1684) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1685) qgroup->rsv_rfer = limit->rsv_rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1686) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1687) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1688) if (limit->flags & BTRFS_QGROUP_LIMIT_RSV_EXCL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1689) if (limit->rsv_excl == CLEAR_VALUE) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1690) qgroup->lim_flags &= ~BTRFS_QGROUP_LIMIT_RSV_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1691) limit->flags &= ~BTRFS_QGROUP_LIMIT_RSV_EXCL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1692) qgroup->rsv_excl = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1693) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1694) qgroup->rsv_excl = limit->rsv_excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1695) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1696) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1697) qgroup->lim_flags |= limit->flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1698)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1699) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1700)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1701) ret = update_qgroup_limit_item(trans, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1702) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1703) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1704) btrfs_info(fs_info, "unable to update quota limit for %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1705) qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1706) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1707)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1708) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1709) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1710) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1711) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1712)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1713) int btrfs_qgroup_trace_extent_nolock(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1714) struct btrfs_delayed_ref_root *delayed_refs,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1715) struct btrfs_qgroup_extent_record *record)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1716) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1717) struct rb_node **p = &delayed_refs->dirty_extent_root.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1718) struct rb_node *parent_node = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1719) struct btrfs_qgroup_extent_record *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1720) u64 bytenr = record->bytenr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1722) lockdep_assert_held(&delayed_refs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1723) trace_btrfs_qgroup_trace_extent(fs_info, record);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1724)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1725) while (*p) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1726) parent_node = *p;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1727) entry = rb_entry(parent_node, struct btrfs_qgroup_extent_record,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1728) node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1729) if (bytenr < entry->bytenr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1730) p = &(*p)->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1731) } else if (bytenr > entry->bytenr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1732) p = &(*p)->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1733) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1734) if (record->data_rsv && !entry->data_rsv) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1735) entry->data_rsv = record->data_rsv;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1736) entry->data_rsv_refroot =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1737) record->data_rsv_refroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1738) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1739) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1740) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1741) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1743) rb_link_node(&record->node, parent_node, p);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1744) rb_insert_color(&record->node, &delayed_refs->dirty_extent_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1745) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1746) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1747)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1748) int btrfs_qgroup_trace_extent_post(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1749) struct btrfs_qgroup_extent_record *qrecord)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1751) struct ulist *old_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1752) u64 bytenr = qrecord->bytenr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1753) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1755) ret = btrfs_find_all_roots(NULL, fs_info, bytenr, 0, &old_root, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1756) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1757) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1758) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1759) "error accounting new delayed refs extent (err code: %d), quota inconsistent",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1760) ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1761) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1762) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1763)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1764) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1765) * Here we don't need to get the lock of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1766) * trans->transaction->delayed_refs, since inserted qrecord won't
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1767) * be deleted, only qrecord->node may be modified (new qrecord insert)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1768) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1769) * So modifying qrecord->old_roots is safe here
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1770) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1771) qrecord->old_roots = old_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1772) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1773) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1774)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1775) int btrfs_qgroup_trace_extent(struct btrfs_trans_handle *trans, u64 bytenr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1776) u64 num_bytes, gfp_t gfp_flag)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1777) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1778) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1779) struct btrfs_qgroup_extent_record *record;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1780) struct btrfs_delayed_ref_root *delayed_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1781) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1783) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1784) || bytenr == 0 || num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1785) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1786) record = kzalloc(sizeof(*record), gfp_flag);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1787) if (!record)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1788) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1790) delayed_refs = &trans->transaction->delayed_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1791) record->bytenr = bytenr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1792) record->num_bytes = num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1793) record->old_roots = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1794)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1795) spin_lock(&delayed_refs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1796) ret = btrfs_qgroup_trace_extent_nolock(fs_info, delayed_refs, record);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1797) spin_unlock(&delayed_refs->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1798) if (ret > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1799) kfree(record);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1800) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1801) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1802) return btrfs_qgroup_trace_extent_post(fs_info, record);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1803) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1804)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1805) int btrfs_qgroup_trace_leaf_items(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1806) struct extent_buffer *eb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1807) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1808) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1809) int nr = btrfs_header_nritems(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1810) int i, extent_type, ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1811) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1812) struct btrfs_file_extent_item *fi;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1813) u64 bytenr, num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1815) /* We can be called directly from walk_up_proc() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1816) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1817) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1818)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1819) for (i = 0; i < nr; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1820) btrfs_item_key_to_cpu(eb, &key, i);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1821)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1822) if (key.type != BTRFS_EXTENT_DATA_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1823) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1824)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1825) fi = btrfs_item_ptr(eb, i, struct btrfs_file_extent_item);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1826) /* filter out non qgroup-accountable extents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1827) extent_type = btrfs_file_extent_type(eb, fi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1828)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1829) if (extent_type == BTRFS_FILE_EXTENT_INLINE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1830) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1831)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1832) bytenr = btrfs_file_extent_disk_bytenr(eb, fi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1833) if (!bytenr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1834) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1835)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1836) num_bytes = btrfs_file_extent_disk_num_bytes(eb, fi);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1837)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1838) ret = btrfs_qgroup_trace_extent(trans, bytenr, num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1839) GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1840) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1841) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1842) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1843) cond_resched();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1844) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1845) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1846)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1847) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1848) * Walk up the tree from the bottom, freeing leaves and any interior
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1849) * nodes which have had all slots visited. If a node (leaf or
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1850) * interior) is freed, the node above it will have it's slot
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1851) * incremented. The root node will never be freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1852) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1853) * At the end of this function, we should have a path which has all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1854) * slots incremented to the next position for a search. If we need to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1855) * read a new node it will be NULL and the node above it will have the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1856) * correct slot selected for a later read.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1857) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1858) * If we increment the root nodes slot counter past the number of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1859) * elements, 1 is returned to signal completion of the search.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1860) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1861) static int adjust_slots_upwards(struct btrfs_path *path, int root_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1862) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1863) int level = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1864) int nr, slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1865) struct extent_buffer *eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1866)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1867) if (root_level == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1868) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1869)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1870) while (level <= root_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1871) eb = path->nodes[level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1872) nr = btrfs_header_nritems(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1873) path->slots[level]++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1874) slot = path->slots[level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1875) if (slot >= nr || level == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1876) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1877) * Don't free the root - we will detect this
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1878) * condition after our loop and return a
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1879) * positive value for caller to stop walking the tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1880) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1881) if (level != root_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1882) btrfs_tree_unlock_rw(eb, path->locks[level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1883) path->locks[level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1885) free_extent_buffer(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1886) path->nodes[level] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1887) path->slots[level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1888) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1889) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1890) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1891) * We have a valid slot to walk back down
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1892) * from. Stop here so caller can process these
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1893) * new nodes.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1894) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1895) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1896) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1898) level++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1899) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1901) eb = path->nodes[root_level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1902) if (path->slots[root_level] >= btrfs_header_nritems(eb))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1903) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1904)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1905) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1906) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1907)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1908) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1909) * Helper function to trace a subtree tree block swap.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1910) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1911) * The swap will happen in highest tree block, but there may be a lot of
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1912) * tree blocks involved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1913) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1914) * For example:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1915) * OO = Old tree blocks
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1916) * NN = New tree blocks allocated during balance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1917) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1918) * File tree (257) Reloc tree for 257
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1919) * L2 OO NN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1920) * / \ / \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1921) * L1 OO OO (a) OO NN (a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1922) * / \ / \ / \ / \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1923) * L0 OO OO OO OO OO OO NN NN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1924) * (b) (c) (b) (c)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1925) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1926) * When calling qgroup_trace_extent_swap(), we will pass:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1927) * @src_eb = OO(a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1928) * @dst_path = [ nodes[1] = NN(a), nodes[0] = NN(c) ]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1929) * @dst_level = 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1930) * @root_level = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1931) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1932) * In that case, qgroup_trace_extent_swap() will search from OO(a) to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1933) * reach OO(c), then mark both OO(c) and NN(c) as qgroup dirty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1934) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1935) * The main work of qgroup_trace_extent_swap() can be split into 3 parts:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1936) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1937) * 1) Tree search from @src_eb
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1938) * It should acts as a simplified btrfs_search_slot().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1939) * The key for search can be extracted from @dst_path->nodes[dst_level]
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1940) * (first key).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1941) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1942) * 2) Mark the final tree blocks in @src_path and @dst_path qgroup dirty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1943) * NOTE: In above case, OO(a) and NN(a) won't be marked qgroup dirty.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1944) * They should be marked during previous (@dst_level = 1) iteration.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1945) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1946) * 3) Mark file extents in leaves dirty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1947) * We don't have good way to pick out new file extents only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1948) * So we still follow the old method by scanning all file extents in
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1949) * the leave.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1950) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1951) * This function can free us from keeping two paths, thus later we only need
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1952) * to care about how to iterate all new tree blocks in reloc tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1953) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1954) static int qgroup_trace_extent_swap(struct btrfs_trans_handle* trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1955) struct extent_buffer *src_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1956) struct btrfs_path *dst_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1957) int dst_level, int root_level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1958) bool trace_leaf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1959) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1960) struct btrfs_key key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1961) struct btrfs_path *src_path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1962) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1963) u32 nodesize = fs_info->nodesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1964) int cur_level = root_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1965) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1967) BUG_ON(dst_level > root_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1968) /* Level mismatch */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1969) if (btrfs_header_level(src_eb) != root_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1970) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1971)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1972) src_path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1973) if (!src_path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1974) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1975) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1976) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1978) if (dst_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1979) btrfs_node_key_to_cpu(dst_path->nodes[dst_level], &key, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1980) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1981) btrfs_item_key_to_cpu(dst_path->nodes[dst_level], &key, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1982)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1983) /* For src_path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1984) atomic_inc(&src_eb->refs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1985) src_path->nodes[root_level] = src_eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1986) src_path->slots[root_level] = dst_path->slots[root_level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1987) src_path->locks[root_level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1988)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1989) /* A simplified version of btrfs_search_slot() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1990) while (cur_level >= dst_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1991) struct btrfs_key src_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1992) struct btrfs_key dst_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1994) if (src_path->nodes[cur_level] == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1995) struct btrfs_key first_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1996) struct extent_buffer *eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1997) int parent_slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1998) u64 child_gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1999) u64 child_bytenr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2001) eb = src_path->nodes[cur_level + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2002) parent_slot = src_path->slots[cur_level + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2003) child_bytenr = btrfs_node_blockptr(eb, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2004) child_gen = btrfs_node_ptr_generation(eb, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2005) btrfs_node_key_to_cpu(eb, &first_key, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2007) eb = read_tree_block(fs_info, child_bytenr, child_gen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2008) cur_level, &first_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2009) if (IS_ERR(eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2010) ret = PTR_ERR(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2011) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2012) } else if (!extent_buffer_uptodate(eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2013) free_extent_buffer(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2014) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2015) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2016) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2018) src_path->nodes[cur_level] = eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2020) btrfs_tree_read_lock(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2021) btrfs_set_lock_blocking_read(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2022) src_path->locks[cur_level] = BTRFS_READ_LOCK_BLOCKING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2023) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2025) src_path->slots[cur_level] = dst_path->slots[cur_level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2026) if (cur_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2027) btrfs_node_key_to_cpu(dst_path->nodes[cur_level],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2028) &dst_key, dst_path->slots[cur_level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2029) btrfs_node_key_to_cpu(src_path->nodes[cur_level],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2030) &src_key, src_path->slots[cur_level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2031) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2032) btrfs_item_key_to_cpu(dst_path->nodes[cur_level],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2033) &dst_key, dst_path->slots[cur_level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2034) btrfs_item_key_to_cpu(src_path->nodes[cur_level],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2035) &src_key, src_path->slots[cur_level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2036) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2037) /* Content mismatch, something went wrong */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2038) if (btrfs_comp_cpu_keys(&dst_key, &src_key)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2039) ret = -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2040) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2041) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2042) cur_level--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2043) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2044)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2045) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2046) * Now both @dst_path and @src_path have been populated, record the tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2047) * blocks for qgroup accounting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2048) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2049) ret = btrfs_qgroup_trace_extent(trans, src_path->nodes[dst_level]->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2050) nodesize, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2051) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2052) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2053) ret = btrfs_qgroup_trace_extent(trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2054) dst_path->nodes[dst_level]->start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2055) nodesize, GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2056) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2057) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2059) /* Record leaf file extents */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2060) if (dst_level == 0 && trace_leaf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2061) ret = btrfs_qgroup_trace_leaf_items(trans, src_path->nodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2062) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2063) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2064) ret = btrfs_qgroup_trace_leaf_items(trans, dst_path->nodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2065) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2066) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2067) btrfs_free_path(src_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2068) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2069) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2070)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2071) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2072) * Helper function to do recursive generation-aware depth-first search, to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2073) * locate all new tree blocks in a subtree of reloc tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2074) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2075) * E.g. (OO = Old tree blocks, NN = New tree blocks, whose gen == last_snapshot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2076) * reloc tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2077) * L2 NN (a)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2078) * / \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2079) * L1 OO NN (b)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2080) * / \ / \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2081) * L0 OO OO OO NN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2082) * (c) (d)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2083) * If we pass:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2084) * @dst_path = [ nodes[1] = NN(b), nodes[0] = NULL ],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2085) * @cur_level = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2086) * @root_level = 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2087) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2088) * We will iterate through tree blocks NN(b), NN(d) and info qgroup to trace
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2089) * above tree blocks along with their counter parts in file tree.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2090) * While during search, old tree blocks OO(c) will be skipped as tree block swap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2091) * won't affect OO(c).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2092) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2093) static int qgroup_trace_new_subtree_blocks(struct btrfs_trans_handle* trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2094) struct extent_buffer *src_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2095) struct btrfs_path *dst_path,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2096) int cur_level, int root_level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2097) u64 last_snapshot, bool trace_leaf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2098) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2099) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2100) struct extent_buffer *eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2101) bool need_cleanup = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2102) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2103) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2104)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2105) /* Level sanity check */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2106) if (cur_level < 0 || cur_level >= BTRFS_MAX_LEVEL - 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2107) root_level < 0 || root_level >= BTRFS_MAX_LEVEL - 1 ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2108) root_level < cur_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2109) btrfs_err_rl(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2110) "%s: bad levels, cur_level=%d root_level=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2111) __func__, cur_level, root_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2112) return -EUCLEAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2113) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2114)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2115) /* Read the tree block if needed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2116) if (dst_path->nodes[cur_level] == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2117) struct btrfs_key first_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2118) int parent_slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2119) u64 child_gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2120) u64 child_bytenr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2122) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2123) * dst_path->nodes[root_level] must be initialized before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2124) * calling this function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2125) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2126) if (cur_level == root_level) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2127) btrfs_err_rl(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2128) "%s: dst_path->nodes[%d] not initialized, root_level=%d cur_level=%d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2129) __func__, root_level, root_level, cur_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2130) return -EUCLEAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2131) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2132)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2133) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2134) * We need to get child blockptr/gen from parent before we can
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2135) * read it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2136) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2137) eb = dst_path->nodes[cur_level + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2138) parent_slot = dst_path->slots[cur_level + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2139) child_bytenr = btrfs_node_blockptr(eb, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2140) child_gen = btrfs_node_ptr_generation(eb, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2141) btrfs_node_key_to_cpu(eb, &first_key, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2142)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2143) /* This node is old, no need to trace */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2144) if (child_gen < last_snapshot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2145) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2147) eb = read_tree_block(fs_info, child_bytenr, child_gen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2148) cur_level, &first_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2149) if (IS_ERR(eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2150) ret = PTR_ERR(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2151) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2152) } else if (!extent_buffer_uptodate(eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2153) free_extent_buffer(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2154) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2155) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2156) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2157)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2158) dst_path->nodes[cur_level] = eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2159) dst_path->slots[cur_level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2160)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2161) btrfs_tree_read_lock(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2162) btrfs_set_lock_blocking_read(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2163) dst_path->locks[cur_level] = BTRFS_READ_LOCK_BLOCKING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2164) need_cleanup = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2167) /* Now record this tree block and its counter part for qgroups */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2168) ret = qgroup_trace_extent_swap(trans, src_eb, dst_path, cur_level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2169) root_level, trace_leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2170) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2171) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2173) eb = dst_path->nodes[cur_level];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2175) if (cur_level > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2176) /* Iterate all child tree blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2177) for (i = 0; i < btrfs_header_nritems(eb); i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2178) /* Skip old tree blocks as they won't be swapped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2179) if (btrfs_node_ptr_generation(eb, i) < last_snapshot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2180) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2181) dst_path->slots[cur_level] = i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2183) /* Recursive call (at most 7 times) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2184) ret = qgroup_trace_new_subtree_blocks(trans, src_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2185) dst_path, cur_level - 1, root_level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2186) last_snapshot, trace_leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2187) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2188) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2189) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2190) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2191)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2192) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2193) if (need_cleanup) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2194) /* Clean up */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2195) btrfs_tree_unlock_rw(dst_path->nodes[cur_level],
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2196) dst_path->locks[cur_level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2197) free_extent_buffer(dst_path->nodes[cur_level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2198) dst_path->nodes[cur_level] = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2199) dst_path->slots[cur_level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2200) dst_path->locks[cur_level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2201) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2202) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2203) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2204) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2205)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2206) static int qgroup_trace_subtree_swap(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2207) struct extent_buffer *src_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2208) struct extent_buffer *dst_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2209) u64 last_snapshot, bool trace_leaf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2211) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2212) struct btrfs_path *dst_path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2213) int level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2214) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2215)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2216) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2217) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2219) /* Wrong parameter order */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2220) if (btrfs_header_generation(src_eb) > btrfs_header_generation(dst_eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2221) btrfs_err_rl(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2222) "%s: bad parameter order, src_gen=%llu dst_gen=%llu", __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2223) btrfs_header_generation(src_eb),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2224) btrfs_header_generation(dst_eb));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2225) return -EUCLEAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2226) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2227)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2228) if (!extent_buffer_uptodate(src_eb) || !extent_buffer_uptodate(dst_eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2229) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2230) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2231) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2232)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2233) level = btrfs_header_level(dst_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2234) dst_path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2235) if (!dst_path) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2236) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2237) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2238) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2239) /* For dst_path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2240) atomic_inc(&dst_eb->refs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2241) dst_path->nodes[level] = dst_eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2242) dst_path->slots[level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2243) dst_path->locks[level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2245) /* Do the generation aware breadth-first search */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2246) ret = qgroup_trace_new_subtree_blocks(trans, src_eb, dst_path, level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2247) level, last_snapshot, trace_leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2248) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2249) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2250) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2251)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2252) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2253) btrfs_free_path(dst_path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2254) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2255) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2256) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2257) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2258)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2259) int btrfs_qgroup_trace_subtree(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2260) struct extent_buffer *root_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2261) u64 root_gen, int root_level)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2263) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2264) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2265) int level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2266) struct extent_buffer *eb = root_eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2267) struct btrfs_path *path = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2268)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2269) BUG_ON(root_level < 0 || root_level >= BTRFS_MAX_LEVEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2270) BUG_ON(root_eb == NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2272) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2273) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2275) if (!extent_buffer_uptodate(root_eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2276) ret = btrfs_read_buffer(root_eb, root_gen, root_level, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2277) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2278) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2281) if (root_level == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2282) ret = btrfs_qgroup_trace_leaf_items(trans, root_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2283) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2284) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2286) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2287) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2288) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2289)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2290) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2291) * Walk down the tree. Missing extent blocks are filled in as
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2292) * we go. Metadata is accounted every time we read a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2293) * extent block.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2294) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2295) * When we reach a leaf, we account for file extent items in it,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2296) * walk back up the tree (adjusting slot pointers as we go)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2297) * and restart the search process.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2298) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2299) atomic_inc(&root_eb->refs); /* For path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2300) path->nodes[root_level] = root_eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2301) path->slots[root_level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2302) path->locks[root_level] = 0; /* so release_path doesn't try to unlock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2303) walk_down:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2304) level = root_level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2305) while (level >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2306) if (path->nodes[level] == NULL) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2307) struct btrfs_key first_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2308) int parent_slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2309) u64 child_gen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2310) u64 child_bytenr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2312) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2313) * We need to get child blockptr/gen from parent before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2314) * we can read it.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2315) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2316) eb = path->nodes[level + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2317) parent_slot = path->slots[level + 1];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2318) child_bytenr = btrfs_node_blockptr(eb, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2319) child_gen = btrfs_node_ptr_generation(eb, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2320) btrfs_node_key_to_cpu(eb, &first_key, parent_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2322) eb = read_tree_block(fs_info, child_bytenr, child_gen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2323) level, &first_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2324) if (IS_ERR(eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2325) ret = PTR_ERR(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2326) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2327) } else if (!extent_buffer_uptodate(eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2328) free_extent_buffer(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2329) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2330) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2331) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2332)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2333) path->nodes[level] = eb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2334) path->slots[level] = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2335)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2336) btrfs_tree_read_lock(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2337) btrfs_set_lock_blocking_read(eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2338) path->locks[level] = BTRFS_READ_LOCK_BLOCKING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2340) ret = btrfs_qgroup_trace_extent(trans, child_bytenr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2341) fs_info->nodesize,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2342) GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2343) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2344) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2345) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2347) if (level == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2348) ret = btrfs_qgroup_trace_leaf_items(trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2349) path->nodes[level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2350) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2351) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2352)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2353) /* Nonzero return here means we completed our search */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2354) ret = adjust_slots_upwards(path, root_level);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2355) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2356) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2357)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2358) /* Restart search with new slots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2359) goto walk_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2360) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2362) level--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2363) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2365) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2366) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2367) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2368)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2369) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2370) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2371)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2372) #define UPDATE_NEW 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2373) #define UPDATE_OLD 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2374) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2375) * Walk all of the roots that points to the bytenr and adjust their refcnts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2376) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2377) static int qgroup_update_refcnt(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2378) struct ulist *roots, struct ulist *tmp,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2379) struct ulist *qgroups, u64 seq, int update_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2380) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2381) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2382) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2383) struct ulist_node *tmp_unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2384) struct ulist_iterator tmp_uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2385) struct btrfs_qgroup *qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2386) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2387)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2388) if (!roots)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2389) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2390) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2391) while ((unode = ulist_next(roots, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2392) qg = find_qgroup_rb(fs_info, unode->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2393) if (!qg)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2394) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2395)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2396) ulist_reinit(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2397) ret = ulist_add(qgroups, qg->qgroupid, qgroup_to_aux(qg),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2398) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2399) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2400) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2401) ret = ulist_add(tmp, qg->qgroupid, qgroup_to_aux(qg), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2402) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2403) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2404) ULIST_ITER_INIT(&tmp_uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2405) while ((tmp_unode = ulist_next(tmp, &tmp_uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2406) struct btrfs_qgroup_list *glist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2408) qg = unode_aux_to_qgroup(tmp_unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2409) if (update_old)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2410) btrfs_qgroup_update_old_refcnt(qg, seq, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2411) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2412) btrfs_qgroup_update_new_refcnt(qg, seq, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2413) list_for_each_entry(glist, &qg->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2414) ret = ulist_add(qgroups, glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2415) qgroup_to_aux(glist->group),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2416) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2417) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2418) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2419) ret = ulist_add(tmp, glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2420) qgroup_to_aux(glist->group),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2421) GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2422) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2423) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2425) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2426) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2427) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2428) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2429)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2430) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2431) * Update qgroup rfer/excl counters.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2432) * Rfer update is easy, codes can explain themselves.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2433) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2434) * Excl update is tricky, the update is split into 2 parts.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2435) * Part 1: Possible exclusive <-> sharing detect:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2436) * | A | !A |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2437) * -------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2438) * B | * | - |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2439) * -------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2440) * !B | + | ** |
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2441) * -------------------------------------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2442) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2443) * Conditions:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2444) * A: cur_old_roots < nr_old_roots (not exclusive before)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2445) * !A: cur_old_roots == nr_old_roots (possible exclusive before)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2446) * B: cur_new_roots < nr_new_roots (not exclusive now)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2447) * !B: cur_new_roots == nr_new_roots (possible exclusive now)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2448) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2449) * Results:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2450) * +: Possible sharing -> exclusive -: Possible exclusive -> sharing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2451) * *: Definitely not changed. **: Possible unchanged.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2452) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2453) * For !A and !B condition, the exception is cur_old/new_roots == 0 case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2454) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2455) * To make the logic clear, we first use condition A and B to split
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2456) * combination into 4 results.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2457) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2458) * Then, for result "+" and "-", check old/new_roots == 0 case, as in them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2459) * only on variant maybe 0.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2460) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2461) * Lastly, check result **, since there are 2 variants maybe 0, split them
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2462) * again(2x2).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2463) * But this time we don't need to consider other things, the codes and logic
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2464) * is easy to understand now.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2465) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2466) static int qgroup_update_counters(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2467) struct ulist *qgroups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2468) u64 nr_old_roots,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2469) u64 nr_new_roots,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2470) u64 num_bytes, u64 seq)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2471) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2472) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2473) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2474) struct btrfs_qgroup *qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2475) u64 cur_new_count, cur_old_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2477) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2478) while ((unode = ulist_next(qgroups, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2479) bool dirty = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2480)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2481) qg = unode_aux_to_qgroup(unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2482) cur_old_count = btrfs_qgroup_get_old_refcnt(qg, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2483) cur_new_count = btrfs_qgroup_get_new_refcnt(qg, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2484)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2485) trace_qgroup_update_counters(fs_info, qg, cur_old_count,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2486) cur_new_count);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2488) /* Rfer update part */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2489) if (cur_old_count == 0 && cur_new_count > 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2490) qg->rfer += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2491) qg->rfer_cmpr += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2492) dirty = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2493) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2494) if (cur_old_count > 0 && cur_new_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2495) qg->rfer -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2496) qg->rfer_cmpr -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2497) dirty = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2498) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2499)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2500) /* Excl update part */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2501) /* Exclusive/none -> shared case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2502) if (cur_old_count == nr_old_roots &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2503) cur_new_count < nr_new_roots) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2504) /* Exclusive -> shared */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2505) if (cur_old_count != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2506) qg->excl -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2507) qg->excl_cmpr -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2508) dirty = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2509) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2510) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2512) /* Shared -> exclusive/none case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2513) if (cur_old_count < nr_old_roots &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2514) cur_new_count == nr_new_roots) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2515) /* Shared->exclusive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2516) if (cur_new_count != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2517) qg->excl += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2518) qg->excl_cmpr += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2519) dirty = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2520) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2521) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2522)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2523) /* Exclusive/none -> exclusive/none case */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2524) if (cur_old_count == nr_old_roots &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2525) cur_new_count == nr_new_roots) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2526) if (cur_old_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2527) /* None -> exclusive/none */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2528)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2529) if (cur_new_count != 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2530) /* None -> exclusive */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2531) qg->excl += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2532) qg->excl_cmpr += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2533) dirty = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2535) /* None -> none, nothing changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2536) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2537) /* Exclusive -> exclusive/none */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2538)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2539) if (cur_new_count == 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2540) /* Exclusive -> none */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2541) qg->excl -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2542) qg->excl_cmpr -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2543) dirty = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2544) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2545) /* Exclusive -> exclusive, nothing changed */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2546) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2547) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2549) if (dirty)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2550) qgroup_dirty(fs_info, qg);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2551) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2552) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2553) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2554)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2555) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2556) * Check if the @roots potentially is a list of fs tree roots
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2557) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2558) * Return 0 for definitely not a fs/subvol tree roots ulist
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2559) * Return 1 for possible fs/subvol tree roots in the list (considering an empty
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2560) * one as well)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2561) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2562) static int maybe_fs_roots(struct ulist *roots)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2563) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2564) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2565) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2566)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2567) /* Empty one, still possible for fs roots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2568) if (!roots || roots->nnodes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2569) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2570)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2571) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2572) unode = ulist_next(roots, &uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2573) if (!unode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2574) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2575)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2576) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2577) * If it contains fs tree roots, then it must belong to fs/subvol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2578) * trees.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2579) * If it contains a non-fs tree, it won't be shared with fs/subvol trees.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2580) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2581) return is_fstree(unode->val);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2582) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2583)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2584) int btrfs_qgroup_account_extent(struct btrfs_trans_handle *trans, u64 bytenr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2585) u64 num_bytes, struct ulist *old_roots,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2586) struct ulist *new_roots)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2587) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2588) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2589) struct ulist *qgroups = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2590) struct ulist *tmp = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2591) u64 seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2592) u64 nr_new_roots = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2593) u64 nr_old_roots = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2594) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2596) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2597) * If quotas get disabled meanwhile, the resouces need to be freed and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2598) * we can't just exit here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2599) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2600) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2601) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2602)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2603) if (new_roots) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2604) if (!maybe_fs_roots(new_roots))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2605) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2606) nr_new_roots = new_roots->nnodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2607) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2608) if (old_roots) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2609) if (!maybe_fs_roots(old_roots))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2610) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2611) nr_old_roots = old_roots->nnodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2612) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2613)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2614) /* Quick exit, either not fs tree roots, or won't affect any qgroup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2615) if (nr_old_roots == 0 && nr_new_roots == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2616) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2617)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2618) BUG_ON(!fs_info->quota_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2619)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2620) trace_btrfs_qgroup_account_extent(fs_info, trans->transid, bytenr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2621) num_bytes, nr_old_roots, nr_new_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2623) qgroups = ulist_alloc(GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2624) if (!qgroups) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2625) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2626) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2627) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2628) tmp = ulist_alloc(GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2629) if (!tmp) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2630) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2631) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2632) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2633)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2634) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2635) if (fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2636) if (fs_info->qgroup_rescan_progress.objectid <= bytenr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2637) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2638) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2639) goto out_free;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2640) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2641) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2642) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2643)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2644) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2645) seq = fs_info->qgroup_seq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2647) /* Update old refcnts using old_roots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2648) ret = qgroup_update_refcnt(fs_info, old_roots, tmp, qgroups, seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2649) UPDATE_OLD);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2650) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2651) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2652)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2653) /* Update new refcnts using new_roots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2654) ret = qgroup_update_refcnt(fs_info, new_roots, tmp, qgroups, seq,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2655) UPDATE_NEW);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2656) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2657) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2659) qgroup_update_counters(fs_info, qgroups, nr_old_roots, nr_new_roots,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2660) num_bytes, seq);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2662) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2663) * Bump qgroup_seq to avoid seq overlap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2664) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2665) fs_info->qgroup_seq += max(nr_old_roots, nr_new_roots) + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2666) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2667) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2668) out_free:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2669) ulist_free(tmp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2670) ulist_free(qgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2671) ulist_free(old_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2672) ulist_free(new_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2673) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2674) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2675)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2676) int btrfs_qgroup_account_extents(struct btrfs_trans_handle *trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2677) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2678) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2679) struct btrfs_qgroup_extent_record *record;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2680) struct btrfs_delayed_ref_root *delayed_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2681) struct ulist *new_roots = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2682) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2683) u64 num_dirty_extents = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2684) u64 qgroup_to_skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2685) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2686)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2687) delayed_refs = &trans->transaction->delayed_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2688) qgroup_to_skip = delayed_refs->qgroup_to_skip;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2689) while ((node = rb_first(&delayed_refs->dirty_extent_root))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2690) record = rb_entry(node, struct btrfs_qgroup_extent_record,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2691) node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2692)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2693) num_dirty_extents++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2694) trace_btrfs_qgroup_account_extents(fs_info, record);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2695)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2696) if (!ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2697) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2698) * Old roots should be searched when inserting qgroup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2699) * extent record
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2700) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2701) if (WARN_ON(!record->old_roots)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2702) /* Search commit root to find old_roots */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2703) ret = btrfs_find_all_roots(NULL, fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2704) record->bytenr, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2705) &record->old_roots, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2706) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2707) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2708) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2710) /* Free the reserved data space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2711) btrfs_qgroup_free_refroot(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2712) record->data_rsv_refroot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2713) record->data_rsv,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2714) BTRFS_QGROUP_RSV_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2715) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2716) * Use SEQ_LAST as time_seq to do special search, which
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2717) * doesn't lock tree or delayed_refs and search current
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2718) * root. It's safe inside commit_transaction().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2719) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2720) ret = btrfs_find_all_roots(trans, fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2721) record->bytenr, SEQ_LAST, &new_roots, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2722) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2723) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2724) if (qgroup_to_skip) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2725) ulist_del(new_roots, qgroup_to_skip, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2726) ulist_del(record->old_roots, qgroup_to_skip,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2727) 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2728) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2729) ret = btrfs_qgroup_account_extent(trans, record->bytenr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2730) record->num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2731) record->old_roots,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2732) new_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2733) record->old_roots = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2734) new_roots = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2735) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2736) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2737) ulist_free(record->old_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2738) ulist_free(new_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2739) new_roots = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2740) rb_erase(node, &delayed_refs->dirty_extent_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2741) kfree(record);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2743) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2744) trace_qgroup_num_dirty_extents(fs_info, trans->transid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2745) num_dirty_extents);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2746) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2747) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2749) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2750) * called from commit_transaction. Writes all changed qgroups to disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2751) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2752) int btrfs_run_qgroups(struct btrfs_trans_handle *trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2753) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2754) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2755) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2756)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2757) if (!fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2758) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2759)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2760) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2761) while (!list_empty(&fs_info->dirty_qgroups)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2762) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2763) qgroup = list_first_entry(&fs_info->dirty_qgroups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2764) struct btrfs_qgroup, dirty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2765) list_del_init(&qgroup->dirty);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2766) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2767) ret = update_qgroup_info_item(trans, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2768) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2769) fs_info->qgroup_flags |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2770) BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2771) ret = update_qgroup_limit_item(trans, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2772) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2773) fs_info->qgroup_flags |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2774) BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2775) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2776) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2777) if (test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2778) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2779) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2780) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_ON;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2781) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2782)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2783) ret = update_qgroup_status_item(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2784) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2785) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2787) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2788) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2789)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2790) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2791) * Copy the accounting information between qgroups. This is necessary
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2792) * when a snapshot or a subvolume is created. Throwing an error will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2793) * cause a transaction abort so we take extra care here to only error
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2794) * when a readonly fs is a reasonable outcome.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2795) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2796) int btrfs_qgroup_inherit(struct btrfs_trans_handle *trans, u64 srcid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2797) u64 objectid, struct btrfs_qgroup_inherit *inherit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2798) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2799) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2800) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2801) u64 *i_qgroups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2802) bool committing = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2803) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2804) struct btrfs_root *quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2805) struct btrfs_qgroup *srcgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2806) struct btrfs_qgroup *dstgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2807) bool need_rescan = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2808) u32 level_size = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2809) u64 nums;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2810)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2811) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2812) * There are only two callers of this function.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2813) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2814) * One in create_subvol() in the ioctl context, which needs to hold
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2815) * the qgroup_ioctl_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2816) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2817) * The other one in create_pending_snapshot() where no other qgroup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2818) * code can modify the fs as they all need to either start a new trans
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2819) * or hold a trans handler, thus we don't need to hold
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2820) * qgroup_ioctl_lock.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2821) * This would avoid long and complex lock chain and make lockdep happy.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2822) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2823) spin_lock(&fs_info->trans_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2824) if (trans->transaction->state == TRANS_STATE_COMMIT_DOING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2825) committing = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2826) spin_unlock(&fs_info->trans_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2827)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2828) if (!committing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2829) mutex_lock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2830) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2831) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2832)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2833) quota_root = fs_info->quota_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2834) if (!quota_root) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2835) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2836) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2837) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2838)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2839) if (inherit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2840) i_qgroups = (u64 *)(inherit + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2841) nums = inherit->num_qgroups + 2 * inherit->num_ref_copies +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2842) 2 * inherit->num_excl_copies;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2843) for (i = 0; i < nums; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2844) srcgroup = find_qgroup_rb(fs_info, *i_qgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2845)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2846) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2847) * Zero out invalid groups so we can ignore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2848) * them later.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2849) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2850) if (!srcgroup ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2851) ((srcgroup->qgroupid >> 48) <= (objectid >> 48)))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2852) *i_qgroups = 0ULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2853)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2854) ++i_qgroups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2855) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2856) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2857)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2858) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2859) * create a tracking group for the subvol itself
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2860) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2861) ret = add_qgroup_item(trans, quota_root, objectid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2862) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2863) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2864)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2865) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2866) * add qgroup to all inherited groups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2867) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2868) if (inherit) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2869) i_qgroups = (u64 *)(inherit + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2870) for (i = 0; i < inherit->num_qgroups; ++i, ++i_qgroups) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2871) if (*i_qgroups == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2872) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2873) ret = add_qgroup_relation_item(trans, objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2874) *i_qgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2875) if (ret && ret != -EEXIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2876) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2877) ret = add_qgroup_relation_item(trans, *i_qgroups,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2878) objectid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2879) if (ret && ret != -EEXIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2880) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2881) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2882) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2883) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2884)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2885)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2886) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2887)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2888) dstgroup = add_qgroup_rb(fs_info, objectid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2889) if (IS_ERR(dstgroup)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2890) ret = PTR_ERR(dstgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2891) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2892) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2893)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2894) if (inherit && inherit->flags & BTRFS_QGROUP_INHERIT_SET_LIMITS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2895) dstgroup->lim_flags = inherit->lim.flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2896) dstgroup->max_rfer = inherit->lim.max_rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2897) dstgroup->max_excl = inherit->lim.max_excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2898) dstgroup->rsv_rfer = inherit->lim.rsv_rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2899) dstgroup->rsv_excl = inherit->lim.rsv_excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2901) ret = update_qgroup_limit_item(trans, dstgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2902) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2903) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2904) btrfs_info(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2905) "unable to update quota limit for %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2906) dstgroup->qgroupid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2907) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2908) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2909) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2910)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2911) if (srcid) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2912) srcgroup = find_qgroup_rb(fs_info, srcid);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2913) if (!srcgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2914) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2915)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2916) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2917) * We call inherit after we clone the root in order to make sure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2918) * our counts don't go crazy, so at this point the only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2919) * difference between the two roots should be the root node.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2920) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2921) level_size = fs_info->nodesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2922) dstgroup->rfer = srcgroup->rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2923) dstgroup->rfer_cmpr = srcgroup->rfer_cmpr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2924) dstgroup->excl = level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2925) dstgroup->excl_cmpr = level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2926) srcgroup->excl = level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2927) srcgroup->excl_cmpr = level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2929) /* inherit the limit info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2930) dstgroup->lim_flags = srcgroup->lim_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2931) dstgroup->max_rfer = srcgroup->max_rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2932) dstgroup->max_excl = srcgroup->max_excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2933) dstgroup->rsv_rfer = srcgroup->rsv_rfer;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2934) dstgroup->rsv_excl = srcgroup->rsv_excl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2935)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2936) qgroup_dirty(fs_info, dstgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2937) qgroup_dirty(fs_info, srcgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2938) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2939)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2940) if (!inherit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2941) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2942)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2943) i_qgroups = (u64 *)(inherit + 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2944) for (i = 0; i < inherit->num_qgroups; ++i) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2945) if (*i_qgroups) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2946) ret = add_relation_rb(fs_info, objectid, *i_qgroups);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2947) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2948) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2949) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2950) ++i_qgroups;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2951)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2952) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2953) * If we're doing a snapshot, and adding the snapshot to a new
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2954) * qgroup, the numbers are guaranteed to be incorrect.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2955) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2956) if (srcid)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2957) need_rescan = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2958) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2959)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2960) for (i = 0; i < inherit->num_ref_copies; ++i, i_qgroups += 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2961) struct btrfs_qgroup *src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2962) struct btrfs_qgroup *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2963)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2964) if (!i_qgroups[0] || !i_qgroups[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2965) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2966)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2967) src = find_qgroup_rb(fs_info, i_qgroups[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2968) dst = find_qgroup_rb(fs_info, i_qgroups[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2969)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2970) if (!src || !dst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2971) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2972) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2973) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2975) dst->rfer = src->rfer - level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2976) dst->rfer_cmpr = src->rfer_cmpr - level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2977)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2978) /* Manually tweaking numbers certainly needs a rescan */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2979) need_rescan = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2980) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2981) for (i = 0; i < inherit->num_excl_copies; ++i, i_qgroups += 2) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2982) struct btrfs_qgroup *src;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2983) struct btrfs_qgroup *dst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2985) if (!i_qgroups[0] || !i_qgroups[1])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2986) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2988) src = find_qgroup_rb(fs_info, i_qgroups[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2989) dst = find_qgroup_rb(fs_info, i_qgroups[1]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2991) if (!src || !dst) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2992) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2993) goto unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2994) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2995)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2996) dst->excl = src->excl + level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2997) dst->excl_cmpr = src->excl_cmpr + level_size;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2998) need_rescan = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2999) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3001) unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3002) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3003) if (!ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3004) ret = btrfs_sysfs_add_one_qgroup(fs_info, dstgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3005) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3006) if (!committing)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3007) mutex_unlock(&fs_info->qgroup_ioctl_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3008) if (need_rescan)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3009) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3010) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3011) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3012)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3013) static bool qgroup_check_limits(const struct btrfs_qgroup *qg, u64 num_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3014) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3015) if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_RFER) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3016) qgroup_rsv_total(qg) + (s64)qg->rfer + num_bytes > qg->max_rfer)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3017) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3018)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3019) if ((qg->lim_flags & BTRFS_QGROUP_LIMIT_MAX_EXCL) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3020) qgroup_rsv_total(qg) + (s64)qg->excl + num_bytes > qg->max_excl)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3021) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3022)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3023) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3024) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3025)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3026) static int qgroup_reserve(struct btrfs_root *root, u64 num_bytes, bool enforce,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3027) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3028) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3029) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3030) struct btrfs_fs_info *fs_info = root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3031) u64 ref_root = root->root_key.objectid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3032) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3033) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3034) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3036) if (!is_fstree(ref_root))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3037) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3038)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3039) if (num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3040) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3041)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3042) if (test_bit(BTRFS_FS_QUOTA_OVERRIDE, &fs_info->flags) &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3043) capable(CAP_SYS_RESOURCE))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3044) enforce = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3045)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3046) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3047) if (!fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3048) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3049)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3050) qgroup = find_qgroup_rb(fs_info, ref_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3051) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3052) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3053)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3054) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3055) * in a first step, we check all affected qgroups if any limits would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3056) * be exceeded
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3057) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3058) ulist_reinit(fs_info->qgroup_ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3059) ret = ulist_add(fs_info->qgroup_ulist, qgroup->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3060) qgroup_to_aux(qgroup), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3061) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3062) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3063) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3064) while ((unode = ulist_next(fs_info->qgroup_ulist, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3065) struct btrfs_qgroup *qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3066) struct btrfs_qgroup_list *glist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3067)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3068) qg = unode_aux_to_qgroup(unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3070) if (enforce && !qgroup_check_limits(qg, num_bytes)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3071) ret = -EDQUOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3072) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3073) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3075) list_for_each_entry(glist, &qg->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3076) ret = ulist_add(fs_info->qgroup_ulist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3077) glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3078) qgroup_to_aux(glist->group), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3079) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3080) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3081) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3082) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3083) ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3084) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3085) * no limits exceeded, now record the reservation into all qgroups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3086) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3087) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3088) while ((unode = ulist_next(fs_info->qgroup_ulist, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3089) struct btrfs_qgroup *qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3090)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3091) qg = unode_aux_to_qgroup(unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3093) qgroup_rsv_add(fs_info, qg, num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3094) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3095)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3096) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3097) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3098) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3099) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3100)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3101) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3102) * Free @num_bytes of reserved space with @type for qgroup. (Normally level 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3103) * qgroup).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3104) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3105) * Will handle all higher level qgroup too.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3106) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3107) * NOTE: If @num_bytes is (u64)-1, this means to free all bytes of this qgroup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3108) * This special case is only used for META_PERTRANS type.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3109) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3110) void btrfs_qgroup_free_refroot(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3111) u64 ref_root, u64 num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3112) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3113) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3114) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3115) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3116) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3117) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3119) if (!is_fstree(ref_root))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3120) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3121)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3122) if (num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3123) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3125) if (num_bytes == (u64)-1 && type != BTRFS_QGROUP_RSV_META_PERTRANS) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3126) WARN(1, "%s: Invalid type to free", __func__);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3127) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3128) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3129) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3131) if (!fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3132) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3134) qgroup = find_qgroup_rb(fs_info, ref_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3135) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3136) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3138) if (num_bytes == (u64)-1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3139) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3140) * We're freeing all pertrans rsv, get reserved value from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3141) * level 0 qgroup as real num_bytes to free.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3142) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3143) num_bytes = qgroup->rsv.values[type];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3145) ulist_reinit(fs_info->qgroup_ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3146) ret = ulist_add(fs_info->qgroup_ulist, qgroup->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3147) qgroup_to_aux(qgroup), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3148) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3149) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3150) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3151) while ((unode = ulist_next(fs_info->qgroup_ulist, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3152) struct btrfs_qgroup *qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3153) struct btrfs_qgroup_list *glist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3154)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3155) qg = unode_aux_to_qgroup(unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3156)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3157) qgroup_rsv_release(fs_info, qg, num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3158)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3159) list_for_each_entry(glist, &qg->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3160) ret = ulist_add(fs_info->qgroup_ulist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3161) glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3162) qgroup_to_aux(glist->group), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3163) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3164) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3165) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3166) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3168) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3169) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3170) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3171)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3172) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3173) * Check if the leaf is the last leaf. Which means all node pointers
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3174) * are at their last position.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3176) static bool is_last_leaf(struct btrfs_path *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3177) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3178) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3180) for (i = 1; i < BTRFS_MAX_LEVEL && path->nodes[i]; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3181) if (path->slots[i] != btrfs_header_nritems(path->nodes[i]) - 1)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3182) return false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3183) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3184) return true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3187) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3188) * returns < 0 on error, 0 when more leafs are to be scanned.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3189) * returns 1 when done.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3190) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3191) static int qgroup_rescan_leaf(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3192) struct btrfs_path *path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3193) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3194) struct btrfs_fs_info *fs_info = trans->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3195) struct btrfs_key found;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3196) struct extent_buffer *scratch_leaf = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3197) struct ulist *roots = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3198) u64 num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3199) bool done;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3200) int slot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3201) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3202)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3203) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3204) ret = btrfs_search_slot_for_read(fs_info->extent_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3205) &fs_info->qgroup_rescan_progress,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3206) path, 1, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3207)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3208) btrfs_debug(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3209) "current progress key (%llu %u %llu), search_slot ret %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3210) fs_info->qgroup_rescan_progress.objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3211) fs_info->qgroup_rescan_progress.type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3212) fs_info->qgroup_rescan_progress.offset, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3214) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3215) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3216) * The rescan is about to end, we will not be scanning any
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3217) * further blocks. We cannot unset the RESCAN flag here, because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3218) * we want to commit the transaction if everything went well.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3219) * To make the live accounting work in this phase, we set our
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3220) * scan progress pointer such that every real extent objectid
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3221) * will be smaller.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3222) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3223) fs_info->qgroup_rescan_progress.objectid = (u64)-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3224) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3225) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3226) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3227) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3228) done = is_last_leaf(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3229)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3230) btrfs_item_key_to_cpu(path->nodes[0], &found,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3231) btrfs_header_nritems(path->nodes[0]) - 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3232) fs_info->qgroup_rescan_progress.objectid = found.objectid + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3233)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3234) scratch_leaf = btrfs_clone_extent_buffer(path->nodes[0]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3235) if (!scratch_leaf) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3236) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3237) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3238) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3240) slot = path->slots[0];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3241) btrfs_release_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3242) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3244) for (; slot < btrfs_header_nritems(scratch_leaf); ++slot) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3245) btrfs_item_key_to_cpu(scratch_leaf, &found, slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3246) if (found.type != BTRFS_EXTENT_ITEM_KEY &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3247) found.type != BTRFS_METADATA_ITEM_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3248) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3249) if (found.type == BTRFS_METADATA_ITEM_KEY)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3250) num_bytes = fs_info->nodesize;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3251) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3252) num_bytes = found.offset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3253)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3254) ret = btrfs_find_all_roots(NULL, fs_info, found.objectid, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3255) &roots, false);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3256) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3257) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3258) /* For rescan, just pass old_roots as NULL */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3259) ret = btrfs_qgroup_account_extent(trans, found.objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3260) num_bytes, NULL, roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3261) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3262) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3263) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3264) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3265) if (scratch_leaf)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3266) free_extent_buffer(scratch_leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3267)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3268) if (done && !ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3269) ret = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3270) fs_info->qgroup_rescan_progress.objectid = (u64)-1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3271) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3272) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3273) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3275) static bool rescan_should_stop(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3276) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3277) return btrfs_fs_closing(fs_info) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3278) test_bit(BTRFS_FS_STATE_REMOUNTING, &fs_info->fs_state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3279) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3280)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3281) static void btrfs_qgroup_rescan_worker(struct btrfs_work *work)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3282) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3283) struct btrfs_fs_info *fs_info = container_of(work, struct btrfs_fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3284) qgroup_rescan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3285) struct btrfs_path *path;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3286) struct btrfs_trans_handle *trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3287) int err = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3288) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3289) bool stopped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3290)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3291) path = btrfs_alloc_path();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3292) if (!path)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3293) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3294) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3295) * Rescan should only search for commit root, and any later difference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3296) * should be recorded by qgroup
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3297) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3298) path->search_commit_root = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3299) path->skip_locking = 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3300)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3301) err = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3302) while (!err && !(stopped = rescan_should_stop(fs_info))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3303) trans = btrfs_start_transaction(fs_info->fs_root, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3304) if (IS_ERR(trans)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3305) err = PTR_ERR(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3306) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3308) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3309) err = -EINTR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3310) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3311) err = qgroup_rescan_leaf(trans, path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3312) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3313) if (err > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3314) btrfs_commit_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3315) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3316) btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3317) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3318)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3319) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3320) btrfs_free_path(path);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3321)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3322) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3323) if (err > 0 &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3324) fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3325) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3326) } else if (err < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3327) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3328) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3329) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3330)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3331) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3332) * only update status, since the previous part has already updated the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3333) * qgroup info.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3334) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3335) trans = btrfs_start_transaction(fs_info->quota_root, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3336) if (IS_ERR(trans)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3337) err = PTR_ERR(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3338) trans = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3339) btrfs_err(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3340) "fail to start transaction for status update: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3341) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3342) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3344) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3345) if (!stopped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3346) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3347) if (trans) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3348) ret = update_qgroup_status_item(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3349) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3350) err = ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3351) btrfs_err(fs_info, "fail to update qgroup status: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3352) err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3353) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3354) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3355) fs_info->qgroup_rescan_running = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3356) complete_all(&fs_info->qgroup_rescan_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3357) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3358)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3359) if (!trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3360) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3361)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3362) btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3363)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3364) if (stopped) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3365) btrfs_info(fs_info, "qgroup scan paused");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3366) } else if (err >= 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3367) btrfs_info(fs_info, "qgroup scan completed%s",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3368) err > 0 ? " (inconsistency flag cleared)" : "");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3369) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3370) btrfs_err(fs_info, "qgroup scan failed with %d", err);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3371) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3372) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3373)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3374) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3375) * Checks that (a) no rescan is running and (b) quota is enabled. Allocates all
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3376) * memory required for the rescan context.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3377) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3378) static int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3379) qgroup_rescan_init(struct btrfs_fs_info *fs_info, u64 progress_objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3380) int init_flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3382) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3383)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3384) if (!init_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3385) /* we're resuming qgroup rescan at mount time */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3386) if (!(fs_info->qgroup_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3387) BTRFS_QGROUP_STATUS_FLAG_RESCAN)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3388) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3389) "qgroup rescan init failed, qgroup rescan is not queued");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3390) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3391) } else if (!(fs_info->qgroup_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3392) BTRFS_QGROUP_STATUS_FLAG_ON)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3393) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3394) "qgroup rescan init failed, qgroup is not enabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3395) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3396) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3397)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3398) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3399) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3400) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3401)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3402) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3403)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3404) if (init_flags) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3405) if (fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3406) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3407) "qgroup rescan is already in progress");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3408) ret = -EINPROGRESS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3409) } else if (!(fs_info->qgroup_flags &
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3410) BTRFS_QGROUP_STATUS_FLAG_ON)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3411) btrfs_warn(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3412) "qgroup rescan init failed, qgroup is not enabled");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3413) ret = -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3414) } else if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3415) /* Quota disable is in progress */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3416) ret = -EBUSY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3417) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3418)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3419) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3420) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3421) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3422) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3423) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_RESCAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3424) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3425)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3426) memset(&fs_info->qgroup_rescan_progress, 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3427) sizeof(fs_info->qgroup_rescan_progress));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3428) fs_info->qgroup_rescan_progress.objectid = progress_objectid;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3429) init_completion(&fs_info->qgroup_rescan_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3430) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3431)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3432) btrfs_init_work(&fs_info->qgroup_rescan_work,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3433) btrfs_qgroup_rescan_worker, NULL, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3434) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3435) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3436)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3437) static void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3438) qgroup_rescan_zero_tracking(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3439) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3440) struct rb_node *n;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3441) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3443) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3444) /* clear all current qgroup tracking information */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3445) for (n = rb_first(&fs_info->qgroup_tree); n; n = rb_next(n)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3446) qgroup = rb_entry(n, struct btrfs_qgroup, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3447) qgroup->rfer = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3448) qgroup->rfer_cmpr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3449) qgroup->excl = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3450) qgroup->excl_cmpr = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3451) qgroup_dirty(fs_info, qgroup);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3452) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3453) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3454) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3455)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3456) int
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3457) btrfs_qgroup_rescan(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3458) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3459) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3460) struct btrfs_trans_handle *trans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3461)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3462) ret = qgroup_rescan_init(fs_info, 0, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3463) if (ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3464) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3465)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3466) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3467) * We have set the rescan_progress to 0, which means no more
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3468) * delayed refs will be accounted by btrfs_qgroup_account_ref.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3469) * However, btrfs_qgroup_account_ref may be right after its call
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3470) * to btrfs_find_all_roots, in which case it would still do the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3471) * accounting.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3472) * To solve this, we're committing the transaction, which will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3473) * ensure we run all delayed refs and only after that, we are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3474) * going to clear all tracking information for a clean start.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3475) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3476)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3477) trans = btrfs_join_transaction(fs_info->fs_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3478) if (IS_ERR(trans)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3479) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3480) return PTR_ERR(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3481) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3482) ret = btrfs_commit_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3483) if (ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3484) fs_info->qgroup_flags &= ~BTRFS_QGROUP_STATUS_FLAG_RESCAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3485) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3486) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3487)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3488) qgroup_rescan_zero_tracking(fs_info);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3489)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3490) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3491) fs_info->qgroup_rescan_running = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3492) btrfs_queue_work(fs_info->qgroup_rescan_workers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3493) &fs_info->qgroup_rescan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3494) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3495)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3496) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3497) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3498)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3499) int btrfs_qgroup_wait_for_completion(struct btrfs_fs_info *fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3500) bool interruptible)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3501) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3502) int running;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3503) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3504)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3505) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3506) running = fs_info->qgroup_rescan_running;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3507) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3508)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3509) if (!running)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3510) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3511)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3512) if (interruptible)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3513) ret = wait_for_completion_interruptible(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3514) &fs_info->qgroup_rescan_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3515) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3516) wait_for_completion(&fs_info->qgroup_rescan_completion);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3517)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3518) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3519) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3521) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3522) * this is only called from open_ctree where we're still single threaded, thus
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3523) * locking is omitted here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3524) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3525) void
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3526) btrfs_qgroup_rescan_resume(struct btrfs_fs_info *fs_info)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3527) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3528) if (fs_info->qgroup_flags & BTRFS_QGROUP_STATUS_FLAG_RESCAN) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3529) mutex_lock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3530) fs_info->qgroup_rescan_running = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3531) btrfs_queue_work(fs_info->qgroup_rescan_workers,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3532) &fs_info->qgroup_rescan_work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3533) mutex_unlock(&fs_info->qgroup_rescan_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3534) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3535) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3536)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3537) #define rbtree_iterate_from_safe(node, next, start) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3538) for (node = start; node && ({ next = rb_next(node); 1;}); node = next)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3539)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3540) static int qgroup_unreserve_range(struct btrfs_inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3541) struct extent_changeset *reserved, u64 start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3542) u64 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3543) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3544) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3545) struct rb_node *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3546) struct ulist_node *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3547) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3548)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3549) node = reserved->range_changed.root.rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3550) if (!node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3551) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3552) while (node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3553) entry = rb_entry(node, struct ulist_node, rb_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3554) if (entry->val < start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3555) node = node->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3556) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3557) node = node->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3558) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3559)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3560) if (entry->val > start && rb_prev(&entry->rb_node))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3561) entry = rb_entry(rb_prev(&entry->rb_node), struct ulist_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3562) rb_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3563)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3564) rbtree_iterate_from_safe(node, next, &entry->rb_node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3565) u64 entry_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3566) u64 entry_end;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3567) u64 entry_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3568) int clear_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3569)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3570) entry = rb_entry(node, struct ulist_node, rb_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3571) entry_start = entry->val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3572) entry_end = entry->aux;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3573) entry_len = entry_end - entry_start + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3574)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3575) if (entry_start >= start + len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3576) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3577) if (entry_start + entry_len <= start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3578) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3579) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3580) * Now the entry is in [start, start + len), revert the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3581) * EXTENT_QGROUP_RESERVED bit.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3582) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3583) clear_ret = clear_extent_bits(&inode->io_tree, entry_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3584) entry_end, EXTENT_QGROUP_RESERVED);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3585) if (!ret && clear_ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3586) ret = clear_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3587)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3588) ulist_del(&reserved->range_changed, entry->val, entry->aux);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3589) if (likely(reserved->bytes_changed >= entry_len)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3590) reserved->bytes_changed -= entry_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3591) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3592) WARN_ON(1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3593) reserved->bytes_changed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3594) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3595) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3596)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3597) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3598) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3599)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3600) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3601) * Try to free some space for qgroup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3602) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3603) * For qgroup, there are only 3 ways to free qgroup space:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3604) * - Flush nodatacow write
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3605) * Any nodatacow write will free its reserved data space at run_delalloc_range().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3606) * In theory, we should only flush nodatacow inodes, but it's not yet
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3607) * possible, so we need to flush the whole root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3608) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3609) * - Wait for ordered extents
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3610) * When ordered extents are finished, their reserved metadata is finally
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3611) * converted to per_trans status, which can be freed by later commit
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3612) * transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3613) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3614) * - Commit transaction
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3615) * This would free the meta_per_trans space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3616) * In theory this shouldn't provide much space, but any more qgroup space
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3617) * is needed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3618) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3619) static int try_flush_qgroup(struct btrfs_root *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3620) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3621) struct btrfs_trans_handle *trans;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3622) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3623) bool can_commit = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3624)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3625) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3626) * If current process holds a transaction, we shouldn't flush, as we
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3627) * assume all space reservation happens before a transaction handle is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3628) * held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3629) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3630) * But there are cases like btrfs_delayed_item_reserve_metadata() where
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3631) * we try to reserve space with one transction handle already held.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3632) * In that case we can't commit transaction, but at least try to end it
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3633) * and hope the started data writes can free some space.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3634) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3635) if (current->journal_info &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3636) current->journal_info != BTRFS_SEND_TRANS_STUB)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3637) can_commit = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3639) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3640) * We don't want to run flush again and again, so if there is a running
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3641) * one, we won't try to start a new flush, but exit directly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3642) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3643) if (test_and_set_bit(BTRFS_ROOT_QGROUP_FLUSHING, &root->state)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3644) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3645) * We are already holding a transaction, thus we can block other
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3646) * threads from flushing. So exit right now. This increases
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3647) * the chance of EDQUOT for heavy load and near limit cases.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3648) * But we can argue that if we're already near limit, EDQUOT is
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3649) * unavoidable anyway.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3650) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3651) if (!can_commit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3652) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3653)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3654) wait_event(root->qgroup_flush_wait,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3655) !test_bit(BTRFS_ROOT_QGROUP_FLUSHING, &root->state));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3656) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3657) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3658)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3659) ret = btrfs_start_delalloc_snapshot(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3660) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3661) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3662) btrfs_wait_ordered_extents(root, U64_MAX, 0, (u64)-1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3663)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3664) trans = btrfs_join_transaction(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3665) if (IS_ERR(trans)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3666) ret = PTR_ERR(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3667) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3668) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3670) if (can_commit)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3671) ret = btrfs_commit_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3672) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3673) ret = btrfs_end_transaction(trans);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3674) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3675) clear_bit(BTRFS_ROOT_QGROUP_FLUSHING, &root->state);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3676) wake_up(&root->qgroup_flush_wait);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3677) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3678) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3679)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3680) static int qgroup_reserve_data(struct btrfs_inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3681) struct extent_changeset **reserved_ret, u64 start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3682) u64 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3683) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3684) struct btrfs_root *root = inode->root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3685) struct extent_changeset *reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3686) bool new_reserved = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3687) u64 orig_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3688) u64 to_reserve;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3689) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3691) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &root->fs_info->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3692) !is_fstree(root->root_key.objectid) || len == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3693) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3694)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3695) /* @reserved parameter is mandatory for qgroup */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3696) if (WARN_ON(!reserved_ret))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3697) return -EINVAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3698) if (!*reserved_ret) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3699) new_reserved = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3700) *reserved_ret = extent_changeset_alloc();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3701) if (!*reserved_ret)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3702) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3703) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3704) reserved = *reserved_ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3705) /* Record already reserved space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3706) orig_reserved = reserved->bytes_changed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3707) ret = set_record_extent_bits(&inode->io_tree, start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3708) start + len -1, EXTENT_QGROUP_RESERVED, reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3710) /* Newly reserved space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3711) to_reserve = reserved->bytes_changed - orig_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3712) trace_btrfs_qgroup_reserve_data(&inode->vfs_inode, start, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3713) to_reserve, QGROUP_RESERVE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3714) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3715) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3716) ret = qgroup_reserve(root, to_reserve, true, BTRFS_QGROUP_RSV_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3717) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3718) goto cleanup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3719)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3720) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3721)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3722) cleanup:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3723) qgroup_unreserve_range(inode, reserved, start, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3724) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3725) if (new_reserved) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3726) extent_changeset_release(reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3727) kfree(reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3728) *reserved_ret = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3729) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3730) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3731) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3732)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3733) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3734) * Reserve qgroup space for range [start, start + len).
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3735) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3736) * This function will either reserve space from related qgroups or do nothing
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3737) * if the range is already reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3738) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3739) * Return 0 for successful reservation
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3740) * Return <0 for error (including -EQUOT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3741) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3742) * NOTE: This function may sleep for memory allocation, dirty page flushing and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3743) * commit transaction. So caller should not hold any dirty page locked.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3744) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3745) int btrfs_qgroup_reserve_data(struct btrfs_inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3746) struct extent_changeset **reserved_ret, u64 start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3747) u64 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3748) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3749) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3750)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3751) ret = qgroup_reserve_data(inode, reserved_ret, start, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3752) if (ret <= 0 && ret != -EDQUOT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3753) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3754)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3755) ret = try_flush_qgroup(inode->root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3756) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3757) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3758) return qgroup_reserve_data(inode, reserved_ret, start, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3759) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3760)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3761) /* Free ranges specified by @reserved, normally in error path */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3762) static int qgroup_free_reserved_data(struct btrfs_inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3763) struct extent_changeset *reserved, u64 start, u64 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3764) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3765) struct btrfs_root *root = inode->root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3766) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3767) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3768) struct extent_changeset changeset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3769) int freed = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3770) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3771)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3772) extent_changeset_init(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3773) len = round_up(start + len, root->fs_info->sectorsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3774) start = round_down(start, root->fs_info->sectorsize);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3775)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3776) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3777) while ((unode = ulist_next(&reserved->range_changed, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3778) u64 range_start = unode->val;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3779) /* unode->aux is the inclusive end */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3780) u64 range_len = unode->aux - range_start + 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3781) u64 free_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3782) u64 free_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3783)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3784) extent_changeset_release(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3785)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3786) /* Only free range in range [start, start + len) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3787) if (range_start >= start + len ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3788) range_start + range_len <= start)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3789) continue;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3790) free_start = max(range_start, start);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3791) free_len = min(start + len, range_start + range_len) -
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3792) free_start;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3793) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3794) * TODO: To also modify reserved->ranges_reserved to reflect
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3795) * the modification.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3796) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3797) * However as long as we free qgroup reserved according to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3798) * EXTENT_QGROUP_RESERVED, we won't double free.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3799) * So not need to rush.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3800) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3801) ret = clear_record_extent_bits(&inode->io_tree, free_start,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3802) free_start + free_len - 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3803) EXTENT_QGROUP_RESERVED, &changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3804) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3805) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3806) freed += changeset.bytes_changed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3807) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3808) btrfs_qgroup_free_refroot(root->fs_info, root->root_key.objectid, freed,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3809) BTRFS_QGROUP_RSV_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3810) ret = freed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3811) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3812) extent_changeset_release(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3813) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3814) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3815)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3816) static int __btrfs_qgroup_release_data(struct btrfs_inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3817) struct extent_changeset *reserved, u64 start, u64 len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3818) int free)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3819) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3820) struct extent_changeset changeset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3821) int trace_op = QGROUP_RELEASE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3822) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3823)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3824) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &inode->root->fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3825) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3826)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3827) /* In release case, we shouldn't have @reserved */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3828) WARN_ON(!free && reserved);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3829) if (free && reserved)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3830) return qgroup_free_reserved_data(inode, reserved, start, len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3831) extent_changeset_init(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3832) ret = clear_record_extent_bits(&inode->io_tree, start, start + len -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3833) EXTENT_QGROUP_RESERVED, &changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3834) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3835) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3836)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3837) if (free)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3838) trace_op = QGROUP_FREE;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3839) trace_btrfs_qgroup_release_data(&inode->vfs_inode, start, len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3840) changeset.bytes_changed, trace_op);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3841) if (free)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3842) btrfs_qgroup_free_refroot(inode->root->fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3843) inode->root->root_key.objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3844) changeset.bytes_changed, BTRFS_QGROUP_RSV_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3845) ret = changeset.bytes_changed;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3846) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3847) extent_changeset_release(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3848) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3849) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3850)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3851) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3852) * Free a reserved space range from io_tree and related qgroups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3853) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3854) * Should be called when a range of pages get invalidated before reaching disk.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3855) * Or for error cleanup case.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3856) * if @reserved is given, only reserved range in [@start, @start + @len) will
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3857) * be freed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3858) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3859) * For data written to disk, use btrfs_qgroup_release_data().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3860) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3861) * NOTE: This function may sleep for memory allocation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3862) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3863) int btrfs_qgroup_free_data(struct btrfs_inode *inode,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3864) struct extent_changeset *reserved, u64 start, u64 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3865) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3866) return __btrfs_qgroup_release_data(inode, reserved, start, len, 1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3867) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3868)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3869) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3870) * Release a reserved space range from io_tree only.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3871) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3872) * Should be called when a range of pages get written to disk and corresponding
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3873) * FILE_EXTENT is inserted into corresponding root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3874) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3875) * Since new qgroup accounting framework will only update qgroup numbers at
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3876) * commit_transaction() time, its reserved space shouldn't be freed from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3877) * related qgroups.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3878) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3879) * But we should release the range from io_tree, to allow further write to be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3880) * COWed.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3881) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3882) * NOTE: This function may sleep for memory allocation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3883) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3884) int btrfs_qgroup_release_data(struct btrfs_inode *inode, u64 start, u64 len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3885) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3886) return __btrfs_qgroup_release_data(inode, NULL, start, len, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3887) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3888)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3889) static void add_root_meta_rsv(struct btrfs_root *root, int num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3890) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3891) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3892) if (type != BTRFS_QGROUP_RSV_META_PREALLOC &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3893) type != BTRFS_QGROUP_RSV_META_PERTRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3894) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3895) if (num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3896) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3897)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3898) spin_lock(&root->qgroup_meta_rsv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3899) if (type == BTRFS_QGROUP_RSV_META_PREALLOC)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3900) root->qgroup_meta_rsv_prealloc += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3901) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3902) root->qgroup_meta_rsv_pertrans += num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3903) spin_unlock(&root->qgroup_meta_rsv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3904) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3905)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3906) static int sub_root_meta_rsv(struct btrfs_root *root, int num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3907) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3908) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3909) if (type != BTRFS_QGROUP_RSV_META_PREALLOC &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3910) type != BTRFS_QGROUP_RSV_META_PERTRANS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3911) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3912) if (num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3913) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3914)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3915) spin_lock(&root->qgroup_meta_rsv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3916) if (type == BTRFS_QGROUP_RSV_META_PREALLOC) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3917) num_bytes = min_t(u64, root->qgroup_meta_rsv_prealloc,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3918) num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3919) root->qgroup_meta_rsv_prealloc -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3920) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3921) num_bytes = min_t(u64, root->qgroup_meta_rsv_pertrans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3922) num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3923) root->qgroup_meta_rsv_pertrans -= num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3924) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3925) spin_unlock(&root->qgroup_meta_rsv_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3926) return num_bytes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3927) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3928)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3929) int btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3930) enum btrfs_qgroup_rsv_type type, bool enforce)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3931) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3932) struct btrfs_fs_info *fs_info = root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3933) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3934)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3935) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3936) !is_fstree(root->root_key.objectid) || num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3937) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3938)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3939) BUG_ON(num_bytes != round_down(num_bytes, fs_info->nodesize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3940) trace_qgroup_meta_reserve(root, (s64)num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3941) ret = qgroup_reserve(root, num_bytes, enforce, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3942) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3943) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3944) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3945) * Record what we have reserved into root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3946) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3947) * To avoid quota disabled->enabled underflow.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3948) * In that case, we may try to free space we haven't reserved
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3949) * (since quota was disabled), so record what we reserved into root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3950) * And ensure later release won't underflow this number.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3951) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3952) add_root_meta_rsv(root, num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3953) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3954) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3955)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3956) int __btrfs_qgroup_reserve_meta(struct btrfs_root *root, int num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3957) enum btrfs_qgroup_rsv_type type, bool enforce)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3958) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3959) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3960)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3961) ret = btrfs_qgroup_reserve_meta(root, num_bytes, type, enforce);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3962) if (ret <= 0 && ret != -EDQUOT)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3963) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3964)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3965) ret = try_flush_qgroup(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3966) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3967) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3968) return btrfs_qgroup_reserve_meta(root, num_bytes, type, enforce);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3969) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3970)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3971) void btrfs_qgroup_free_meta_all_pertrans(struct btrfs_root *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3972) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3973) struct btrfs_fs_info *fs_info = root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3974)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3975) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3976) !is_fstree(root->root_key.objectid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3977) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3978)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3979) /* TODO: Update trace point to handle such free */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3980) trace_qgroup_meta_free_all_pertrans(root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3981) /* Special value -1 means to free all reserved space */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3982) btrfs_qgroup_free_refroot(fs_info, root->root_key.objectid, (u64)-1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3983) BTRFS_QGROUP_RSV_META_PERTRANS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3984) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3985)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3986) void __btrfs_qgroup_free_meta(struct btrfs_root *root, int num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3987) enum btrfs_qgroup_rsv_type type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3988) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3989) struct btrfs_fs_info *fs_info = root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3990)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3991) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3992) !is_fstree(root->root_key.objectid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3993) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3995) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3996) * reservation for META_PREALLOC can happen before quota is enabled,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3997) * which can lead to underflow.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3998) * Here ensure we will only free what we really have reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3999) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4000) num_bytes = sub_root_meta_rsv(root, num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4001) BUG_ON(num_bytes != round_down(num_bytes, fs_info->nodesize));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4002) trace_qgroup_meta_reserve(root, -(s64)num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4003) btrfs_qgroup_free_refroot(fs_info, root->root_key.objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4004) num_bytes, type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4005) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4006)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4007) static void qgroup_convert_meta(struct btrfs_fs_info *fs_info, u64 ref_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4008) int num_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4009) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4010) struct btrfs_qgroup *qgroup;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4011) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4012) struct ulist_iterator uiter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4013) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4015) if (num_bytes == 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4016) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4017) if (!fs_info->quota_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4018) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4019)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4020) spin_lock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4021) qgroup = find_qgroup_rb(fs_info, ref_root);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4022) if (!qgroup)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4023) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4024) ulist_reinit(fs_info->qgroup_ulist);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4025) ret = ulist_add(fs_info->qgroup_ulist, qgroup->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4026) qgroup_to_aux(qgroup), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4027) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4028) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4029) ULIST_ITER_INIT(&uiter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4030) while ((unode = ulist_next(fs_info->qgroup_ulist, &uiter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4031) struct btrfs_qgroup *qg;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4032) struct btrfs_qgroup_list *glist;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4033)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4034) qg = unode_aux_to_qgroup(unode);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4035)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4036) qgroup_rsv_release(fs_info, qg, num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4037) BTRFS_QGROUP_RSV_META_PREALLOC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4038) qgroup_rsv_add(fs_info, qg, num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4039) BTRFS_QGROUP_RSV_META_PERTRANS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4040) list_for_each_entry(glist, &qg->groups, next_group) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4041) ret = ulist_add(fs_info->qgroup_ulist,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4042) glist->group->qgroupid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4043) qgroup_to_aux(glist->group), GFP_ATOMIC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4044) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4045) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4046) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4048) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4049) spin_unlock(&fs_info->qgroup_lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4050) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4052) void btrfs_qgroup_convert_reserved_meta(struct btrfs_root *root, int num_bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4053) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4054) struct btrfs_fs_info *fs_info = root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4055)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4056) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags) ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4057) !is_fstree(root->root_key.objectid))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4058) return;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4059) /* Same as btrfs_qgroup_free_meta_prealloc() */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4060) num_bytes = sub_root_meta_rsv(root, num_bytes,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4061) BTRFS_QGROUP_RSV_META_PREALLOC);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4062) trace_qgroup_meta_convert(root, num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4063) qgroup_convert_meta(fs_info, root->root_key.objectid, num_bytes);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4064) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4065)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4066) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4067) * Check qgroup reserved space leaking, normally at destroy inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4068) * time
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4069) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4070) void btrfs_qgroup_check_reserved_leak(struct btrfs_inode *inode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4071) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4072) struct extent_changeset changeset;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4073) struct ulist_node *unode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4074) struct ulist_iterator iter;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4075) int ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4076)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4077) extent_changeset_init(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4078) ret = clear_record_extent_bits(&inode->io_tree, 0, (u64)-1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4079) EXTENT_QGROUP_RESERVED, &changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4080)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4081) WARN_ON(ret < 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4082) if (WARN_ON(changeset.bytes_changed)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4083) ULIST_ITER_INIT(&iter);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4084) while ((unode = ulist_next(&changeset.range_changed, &iter))) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4085) btrfs_warn(inode->root->fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4086) "leaking qgroup reserved space, ino: %llu, start: %llu, end: %llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4087) btrfs_ino(inode), unode->val, unode->aux);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4088) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4089) btrfs_qgroup_free_refroot(inode->root->fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4090) inode->root->root_key.objectid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4091) changeset.bytes_changed, BTRFS_QGROUP_RSV_DATA);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4092)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4093) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4094) extent_changeset_release(&changeset);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4095) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4096)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4097) void btrfs_qgroup_init_swapped_blocks(
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4098) struct btrfs_qgroup_swapped_blocks *swapped_blocks)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4099) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4100) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4102) spin_lock_init(&swapped_blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4103) for (i = 0; i < BTRFS_MAX_LEVEL; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4104) swapped_blocks->blocks[i] = RB_ROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4105) swapped_blocks->swapped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4106) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4107)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4108) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4109) * Delete all swapped blocks record of @root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4110) * Every record here means we skipped a full subtree scan for qgroup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4111) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4112) * Gets called when committing one transaction.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4113) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4114) void btrfs_qgroup_clean_swapped_blocks(struct btrfs_root *root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4115) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4116) struct btrfs_qgroup_swapped_blocks *swapped_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4117) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4119) swapped_blocks = &root->swapped_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4121) spin_lock(&swapped_blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4122) if (!swapped_blocks->swapped)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4123) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4124) for (i = 0; i < BTRFS_MAX_LEVEL; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4125) struct rb_root *cur_root = &swapped_blocks->blocks[i];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4126) struct btrfs_qgroup_swapped_block *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4127) struct btrfs_qgroup_swapped_block *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4128)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4129) rbtree_postorder_for_each_entry_safe(entry, next, cur_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4130) node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4131) kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4132) swapped_blocks->blocks[i] = RB_ROOT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4133) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4134) swapped_blocks->swapped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4135) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4136) spin_unlock(&swapped_blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4137) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4139) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4140) * Add subtree roots record into @subvol_root.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4141) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4142) * @subvol_root: tree root of the subvolume tree get swapped
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4143) * @bg: block group under balance
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4144) * @subvol_parent/slot: pointer to the subtree root in subvolume tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4145) * @reloc_parent/slot: pointer to the subtree root in reloc tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4146) * BOTH POINTERS ARE BEFORE TREE SWAP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4147) * @last_snapshot: last snapshot generation of the subvolume tree
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4148) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4149) int btrfs_qgroup_add_swapped_blocks(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4150) struct btrfs_root *subvol_root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4151) struct btrfs_block_group *bg,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4152) struct extent_buffer *subvol_parent, int subvol_slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4153) struct extent_buffer *reloc_parent, int reloc_slot,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4154) u64 last_snapshot)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4155) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4156) struct btrfs_fs_info *fs_info = subvol_root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4157) struct btrfs_qgroup_swapped_blocks *blocks = &subvol_root->swapped_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4158) struct btrfs_qgroup_swapped_block *block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4159) struct rb_node **cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4160) struct rb_node *parent = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4161) int level = btrfs_header_level(subvol_parent) - 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4162) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4164) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4165) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4167) if (btrfs_node_ptr_generation(subvol_parent, subvol_slot) >
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4168) btrfs_node_ptr_generation(reloc_parent, reloc_slot)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4169) btrfs_err_rl(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4170) "%s: bad parameter order, subvol_gen=%llu reloc_gen=%llu",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4171) __func__,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4172) btrfs_node_ptr_generation(subvol_parent, subvol_slot),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4173) btrfs_node_ptr_generation(reloc_parent, reloc_slot));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4174) return -EUCLEAN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4175) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4176)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4177) block = kmalloc(sizeof(*block), GFP_NOFS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4178) if (!block) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4179) ret = -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4180) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4181) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4182)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4183) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4184) * @reloc_parent/slot is still before swap, while @block is going to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4185) * record the bytenr after swap, so we do the swap here.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4186) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4187) block->subvol_bytenr = btrfs_node_blockptr(reloc_parent, reloc_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4188) block->subvol_generation = btrfs_node_ptr_generation(reloc_parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4189) reloc_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4190) block->reloc_bytenr = btrfs_node_blockptr(subvol_parent, subvol_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4191) block->reloc_generation = btrfs_node_ptr_generation(subvol_parent,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4192) subvol_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4193) block->last_snapshot = last_snapshot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4194) block->level = level;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4196) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4197) * If we have bg == NULL, we're called from btrfs_recover_relocation(),
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4198) * no one else can modify tree blocks thus we qgroup will not change
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4199) * no matter the value of trace_leaf.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4200) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4201) if (bg && bg->flags & BTRFS_BLOCK_GROUP_DATA)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4202) block->trace_leaf = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4203) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4204) block->trace_leaf = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4205) btrfs_node_key_to_cpu(reloc_parent, &block->first_key, reloc_slot);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4207) /* Insert @block into @blocks */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4208) spin_lock(&blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4209) cur = &blocks->blocks[level].rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4210) while (*cur) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4211) struct btrfs_qgroup_swapped_block *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4212)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4213) parent = *cur;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4214) entry = rb_entry(parent, struct btrfs_qgroup_swapped_block,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4215) node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4216)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4217) if (entry->subvol_bytenr < block->subvol_bytenr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4218) cur = &(*cur)->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4219) } else if (entry->subvol_bytenr > block->subvol_bytenr) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4220) cur = &(*cur)->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4221) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4222) if (entry->subvol_generation !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4223) block->subvol_generation ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4224) entry->reloc_bytenr != block->reloc_bytenr ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4225) entry->reloc_generation !=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4226) block->reloc_generation) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4227) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4228) * Duplicated but mismatch entry found.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4229) * Shouldn't happen.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4230) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4231) * Marking qgroup inconsistent should be enough
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4232) * for end users.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4233) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4234) WARN_ON(IS_ENABLED(CONFIG_BTRFS_DEBUG));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4235) ret = -EEXIST;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4236) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4237) kfree(block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4238) goto out_unlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4239) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4240) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4241) rb_link_node(&block->node, parent, cur);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4242) rb_insert_color(&block->node, &blocks->blocks[level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4243) blocks->swapped = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4244) out_unlock:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4245) spin_unlock(&blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4246) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4247) if (ret < 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4248) fs_info->qgroup_flags |=
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4249) BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4250) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4251) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4252)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4253) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4254) * Check if the tree block is a subtree root, and if so do the needed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4255) * delayed subtree trace for qgroup.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4256) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4257) * This is called during btrfs_cow_block().
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4258) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4259) int btrfs_qgroup_trace_subtree_after_cow(struct btrfs_trans_handle *trans,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4260) struct btrfs_root *root,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4261) struct extent_buffer *subvol_eb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4262) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4263) struct btrfs_fs_info *fs_info = root->fs_info;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4264) struct btrfs_qgroup_swapped_blocks *blocks = &root->swapped_blocks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4265) struct btrfs_qgroup_swapped_block *block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4266) struct extent_buffer *reloc_eb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4267) struct rb_node *node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4268) bool found = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4269) bool swapped = false;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4270) int level = btrfs_header_level(subvol_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4271) int ret = 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4272) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4273)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4274) if (!test_bit(BTRFS_FS_QUOTA_ENABLED, &fs_info->flags))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4275) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4276) if (!is_fstree(root->root_key.objectid) || !root->reloc_root)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4277) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4278)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4279) spin_lock(&blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4280) if (!blocks->swapped) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4281) spin_unlock(&blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4282) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4283) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4284) node = blocks->blocks[level].rb_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4285)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4286) while (node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4287) block = rb_entry(node, struct btrfs_qgroup_swapped_block, node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4288) if (block->subvol_bytenr < subvol_eb->start) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4289) node = node->rb_left;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4290) } else if (block->subvol_bytenr > subvol_eb->start) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4291) node = node->rb_right;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4292) } else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4293) found = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4294) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4295) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4296) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4297) if (!found) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4298) spin_unlock(&blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4299) goto out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4300) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4301) /* Found one, remove it from @blocks first and update blocks->swapped */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4302) rb_erase(&block->node, &blocks->blocks[level]);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4303) for (i = 0; i < BTRFS_MAX_LEVEL; i++) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4304) if (RB_EMPTY_ROOT(&blocks->blocks[i])) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4305) swapped = true;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4306) break;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4307) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4308) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4309) blocks->swapped = swapped;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4310) spin_unlock(&blocks->lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4312) /* Read out reloc subtree root */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4313) reloc_eb = read_tree_block(fs_info, block->reloc_bytenr,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4314) block->reloc_generation, block->level,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4315) &block->first_key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4316) if (IS_ERR(reloc_eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4317) ret = PTR_ERR(reloc_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4318) reloc_eb = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4319) goto free_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4320) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4321) if (!extent_buffer_uptodate(reloc_eb)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4322) ret = -EIO;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4323) goto free_out;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4324) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4325)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4326) ret = qgroup_trace_subtree_swap(trans, reloc_eb, subvol_eb,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4327) block->last_snapshot, block->trace_leaf);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4328) free_out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4329) kfree(block);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4330) free_extent_buffer(reloc_eb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4331) out:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4332) if (ret < 0) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4333) btrfs_err_rl(fs_info,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4334) "failed to account subtree at bytenr %llu: %d",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4335) subvol_eb->start, ret);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4336) fs_info->qgroup_flags |= BTRFS_QGROUP_STATUS_FLAG_INCONSISTENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4337) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4338) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4339) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4340)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4341) void btrfs_qgroup_destroy_extent_records(struct btrfs_transaction *trans)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4342) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4343) struct btrfs_qgroup_extent_record *entry;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4344) struct btrfs_qgroup_extent_record *next;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4345) struct rb_root *root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4346)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4347) root = &trans->delayed_refs.dirty_extent_root;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4348) rbtree_postorder_for_each_entry_safe(entry, next, root, node) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4349) ulist_free(entry->old_roots);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4350) kfree(entry);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4351) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4352) }
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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