^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) * bmap.h - NILFS block mapping.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Copyright (C) 2006-2008 Nippon Telegraph and Telephone Corporation.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Written by Koji Sato.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #ifndef _NILFS_BMAP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define _NILFS_BMAP_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/types.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/fs.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/buffer_head.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/nilfs2_ondisk.h> /* nilfs_binfo, nilfs_inode, etc */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include "alloc.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include "dat.h"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define NILFS_BMAP_INVALID_PTR 0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define nilfs_bmap_keydiff_abs(diff) ((diff) < 0 ? -(diff) : (diff))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) struct nilfs_bmap;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) * union nilfs_bmap_ptr_req - request for bmap ptr
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) * @bpr_ptr: bmap pointer
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) * @bpr_req: request for persistent allocator
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) union nilfs_bmap_ptr_req {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) __u64 bpr_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) struct nilfs_palloc_req bpr_req;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) * struct nilfs_bmap_stats - bmap statistics
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) * @bs_nblocks: number of blocks created or deleted
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) struct nilfs_bmap_stats {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) unsigned int bs_nblocks;
^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) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) * struct nilfs_bmap_operations - bmap operation table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) struct nilfs_bmap_operations {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) int (*bop_lookup)(const struct nilfs_bmap *, __u64, int, __u64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) int (*bop_lookup_contig)(const struct nilfs_bmap *, __u64, __u64 *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int (*bop_insert)(struct nilfs_bmap *, __u64, __u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) int (*bop_delete)(struct nilfs_bmap *, __u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) void (*bop_clear)(struct nilfs_bmap *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) int (*bop_propagate)(struct nilfs_bmap *, struct buffer_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) void (*bop_lookup_dirty_buffers)(struct nilfs_bmap *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct list_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) int (*bop_assign)(struct nilfs_bmap *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct buffer_head **,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) sector_t,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) union nilfs_binfo *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) int (*bop_mark)(struct nilfs_bmap *, __u64, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) int (*bop_seek_key)(const struct nilfs_bmap *, __u64, __u64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) int (*bop_last_key)(const struct nilfs_bmap *, __u64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) /* The following functions are internal use only. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) int (*bop_check_insert)(const struct nilfs_bmap *, __u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) int (*bop_check_delete)(struct nilfs_bmap *, __u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) int (*bop_gather_data)(struct nilfs_bmap *, __u64 *, __u64 *, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) #define NILFS_BMAP_SIZE (NILFS_INODE_BMAP_SIZE * sizeof(__le64))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) #define NILFS_BMAP_KEY_BIT (sizeof(unsigned long) * 8 /* CHAR_BIT */)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) #define NILFS_BMAP_NEW_PTR_INIT \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) (1UL << (sizeof(unsigned long) * 8 /* CHAR_BIT */ - 1))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) static inline int nilfs_bmap_is_new_ptr(unsigned long ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) return !!(ptr & NILFS_BMAP_NEW_PTR_INIT);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) * struct nilfs_bmap - bmap structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) * @b_u: raw data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) * @b_sem: semaphore
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) * @b_inode: owner of bmap
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) * @b_ops: bmap operation table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) * @b_last_allocated_key: last allocated key for data block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) * @b_last_allocated_ptr: last allocated ptr for data block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) * @b_ptr_type: pointer type
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) * @b_state: state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) * @b_nchildren_per_block: maximum number of child nodes for non-root nodes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct nilfs_bmap {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) __u8 u_flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) __le64 u_data[NILFS_BMAP_SIZE / sizeof(__le64)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) } b_u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) struct rw_semaphore b_sem;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) struct inode *b_inode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) const struct nilfs_bmap_operations *b_ops;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) __u64 b_last_allocated_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) __u64 b_last_allocated_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) int b_ptr_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) int b_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) __u16 b_nchildren_per_block;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) /* pointer type */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) #define NILFS_BMAP_PTR_P 0 /* physical block number (i.e. LBN) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) #define NILFS_BMAP_PTR_VS 1 /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) * virtual block number (single
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) * version)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) #define NILFS_BMAP_PTR_VM 2 /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) * virtual block number (has multiple
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) * versions)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) #define NILFS_BMAP_PTR_U (-1) /* never perform pointer operations */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) #define NILFS_BMAP_USE_VBN(bmap) ((bmap)->b_ptr_type > 0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) /* state */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) #define NILFS_BMAP_DIRTY 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) /**
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) * struct nilfs_bmap_store - shadow copy of bmap state
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) * @data: cached raw block mapping of on-disk inode
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) * @last_allocated_key: cached value of last allocated key for data block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) * @last_allocated_ptr: cached value of last allocated ptr for data block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) * @state: cached value of state field of bmap structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) struct nilfs_bmap_store {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) __le64 data[NILFS_BMAP_SIZE / sizeof(__le64)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) __u64 last_allocated_key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) __u64 last_allocated_ptr;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) int state;
^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) int nilfs_bmap_test_and_clear_dirty(struct nilfs_bmap *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) int nilfs_bmap_read(struct nilfs_bmap *, struct nilfs_inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) void nilfs_bmap_write(struct nilfs_bmap *, struct nilfs_inode *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) int nilfs_bmap_lookup_contig(struct nilfs_bmap *, __u64, __u64 *, unsigned int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) int nilfs_bmap_insert(struct nilfs_bmap *bmap, __u64 key, unsigned long rec);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) int nilfs_bmap_delete(struct nilfs_bmap *bmap, __u64 key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151) int nilfs_bmap_seek_key(struct nilfs_bmap *bmap, __u64 start, __u64 *keyp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) int nilfs_bmap_last_key(struct nilfs_bmap *bmap, __u64 *keyp);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) int nilfs_bmap_truncate(struct nilfs_bmap *bmap, __u64 key);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) void nilfs_bmap_clear(struct nilfs_bmap *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) int nilfs_bmap_propagate(struct nilfs_bmap *, struct buffer_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) void nilfs_bmap_lookup_dirty_buffers(struct nilfs_bmap *, struct list_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) int nilfs_bmap_assign(struct nilfs_bmap *, struct buffer_head **,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) unsigned long, union nilfs_binfo *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) int nilfs_bmap_lookup_at_level(struct nilfs_bmap *, __u64, int, __u64 *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) int nilfs_bmap_mark(struct nilfs_bmap *, __u64, int);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) void nilfs_bmap_init_gc(struct nilfs_bmap *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) void nilfs_bmap_save(const struct nilfs_bmap *, struct nilfs_bmap_store *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) void nilfs_bmap_restore(struct nilfs_bmap *, const struct nilfs_bmap_store *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167) static inline int nilfs_bmap_lookup(struct nilfs_bmap *bmap, __u64 key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) __u64 *ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) return nilfs_bmap_lookup_at_level(bmap, key, 1, ptr);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174) * Internal use only
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) struct inode *nilfs_bmap_get_dat(const struct nilfs_bmap *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) static inline int nilfs_bmap_prepare_alloc_ptr(struct nilfs_bmap *bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179) union nilfs_bmap_ptr_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) struct inode *dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) if (dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return nilfs_dat_prepare_alloc(dat, &req->bpr_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) /* ignore target ptr */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) req->bpr_ptr = bmap->b_last_allocated_ptr++;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186) return 0;
^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) static inline void nilfs_bmap_commit_alloc_ptr(struct nilfs_bmap *bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) union nilfs_bmap_ptr_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) struct inode *dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) if (dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) nilfs_dat_commit_alloc(dat, &req->bpr_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197) static inline void nilfs_bmap_abort_alloc_ptr(struct nilfs_bmap *bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) union nilfs_bmap_ptr_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) struct inode *dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) if (dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) nilfs_dat_abort_alloc(dat, &req->bpr_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) bmap->b_last_allocated_ptr--;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) static inline int nilfs_bmap_prepare_end_ptr(struct nilfs_bmap *bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) union nilfs_bmap_ptr_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) struct inode *dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) return dat ? nilfs_dat_prepare_end(dat, &req->bpr_req) : 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) static inline void nilfs_bmap_commit_end_ptr(struct nilfs_bmap *bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) union nilfs_bmap_ptr_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) struct inode *dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218) if (dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) nilfs_dat_commit_end(dat, &req->bpr_req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) bmap->b_ptr_type == NILFS_BMAP_PTR_VS);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) static inline void nilfs_bmap_abort_end_ptr(struct nilfs_bmap *bmap,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224) union nilfs_bmap_ptr_req *req,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct inode *dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) if (dat)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) nilfs_dat_abort_end(dat, &req->bpr_req);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) static inline void nilfs_bmap_set_target_v(struct nilfs_bmap *bmap, __u64 key,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) __u64 ptr)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) bmap->b_last_allocated_key = key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) bmap->b_last_allocated_ptr = ptr;
^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) __u64 nilfs_bmap_data_get_key(const struct nilfs_bmap *,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) const struct buffer_head *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) __u64 nilfs_bmap_find_target_seq(const struct nilfs_bmap *, __u64);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) __u64 nilfs_bmap_find_target_in_group(const struct nilfs_bmap *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) /* Assume that bmap semaphore is locked. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) static inline int nilfs_bmap_dirty(const struct nilfs_bmap *bmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) return !!(bmap->b_state & NILFS_BMAP_DIRTY);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 249) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 250)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 251) /* Assume that bmap semaphore is locked. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static inline void nilfs_bmap_set_dirty(struct nilfs_bmap *bmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) bmap->b_state |= NILFS_BMAP_DIRTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) /* Assume that bmap semaphore is locked. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) static inline void nilfs_bmap_clear_dirty(struct nilfs_bmap *bmap)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260) bmap->b_state &= ~NILFS_BMAP_DIRTY;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #define NILFS_BMAP_LARGE 0x1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #define NILFS_BMAP_SMALL_LOW NILFS_DIRECT_KEY_MIN
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define NILFS_BMAP_SMALL_HIGH NILFS_DIRECT_KEY_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #define NILFS_BMAP_LARGE_LOW NILFS_BTREE_ROOT_NCHILDREN_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #define NILFS_BMAP_LARGE_HIGH NILFS_BTREE_KEY_MAX
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271) #endif /* _NILFS_BMAP_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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