^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) /* SPDX-License-Identifier: GPL-2.0-or-later */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /* -*- mode: c; c-basic-offset: 8; -*-
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * vim: noexpandtab sw=8 ts=8 sts=0:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * dlmcommon.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) * Copyright (C) 2004 Oracle. All rights reserved.
^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 DLMCOMMON_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #define DLMCOMMON_H
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kref.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #define DLM_HB_NODE_DOWN_PRI (0xf000000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #define DLM_HB_NODE_UP_PRI (0x8000000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #define DLM_LOCKID_NAME_MAX 32
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #define DLM_DOMAIN_NAME_MAX_LEN 255
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) #define DLM_LOCK_RES_OWNER_UNKNOWN O2NM_MAX_NODES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) #define DLM_THREAD_SHUFFLE_INTERVAL 5 // flush everything every 5 passes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) #define DLM_THREAD_MS 200 // flush at least every 200 ms
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) #define DLM_HASH_SIZE_DEFAULT (1 << 17)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) #if DLM_HASH_SIZE_DEFAULT < PAGE_SIZE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) # define DLM_HASH_PAGES 1
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) #else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) # define DLM_HASH_PAGES (DLM_HASH_SIZE_DEFAULT / PAGE_SIZE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) #endif
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) #define DLM_BUCKETS_PER_PAGE (PAGE_SIZE / sizeof(struct hlist_head))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) #define DLM_HASH_BUCKETS (DLM_HASH_PAGES * DLM_BUCKETS_PER_PAGE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) /* Intended to make it easier for us to switch out hash functions */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) #define dlm_lockid_hash(_n, _l) full_name_hash(NULL, _n, _l)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) enum dlm_mle_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) DLM_MLE_BLOCK = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) DLM_MLE_MASTER = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) DLM_MLE_MIGRATION = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) DLM_MLE_NUM_TYPES = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) struct dlm_master_list_entry {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) struct hlist_node master_hash_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) struct list_head hb_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) struct dlm_ctxt *dlm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) spinlock_t spinlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) wait_queue_head_t wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) atomic_t woken;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) struct kref mle_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) int inuse;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) unsigned long maybe_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) unsigned long vote_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) unsigned long response_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) unsigned long node_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) u8 master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) u8 new_master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) enum dlm_mle_type type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) struct o2hb_callback_func mle_hb_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) struct o2hb_callback_func mle_hb_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) struct dlm_lock_resource *mleres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) unsigned char mname[DLM_LOCKID_NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) unsigned int mnamelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) unsigned int mnamehash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) enum dlm_ast_type {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) DLM_AST = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) DLM_BAST = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) DLM_ASTUNLOCK = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) };
^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) #define LKM_VALID_FLAGS (LKM_VALBLK | LKM_CONVERT | LKM_UNLOCK | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) LKM_CANCEL | LKM_INVVALBLK | LKM_FORCE | \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) LKM_RECOVERY | LKM_LOCAL | LKM_NOQUEUE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) #define DLM_RECOVERY_LOCK_NAME "$RECOVERY"
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) #define DLM_RECOVERY_LOCK_NAME_LEN 9
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) static inline int dlm_is_recovery_lock(const char *lock_name, int name_len)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) if (name_len == DLM_RECOVERY_LOCK_NAME_LEN &&
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) memcmp(lock_name, DLM_RECOVERY_LOCK_NAME, name_len)==0)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) #define DLM_RECO_STATE_ACTIVE 0x0001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) #define DLM_RECO_STATE_FINALIZE 0x0002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) struct dlm_recovery_ctxt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) struct list_head resources;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) struct list_head node_data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) u8 new_master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) u8 dead_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) u16 state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) unsigned long node_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101) wait_queue_head_t event;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) enum dlm_ctxt_state {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105) DLM_CTXT_NEW = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) DLM_CTXT_JOINED = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) DLM_CTXT_IN_SHUTDOWN = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) DLM_CTXT_LEAVING = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) struct dlm_ctxt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) struct hlist_head **lockres_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) struct list_head dirty_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) struct list_head purge_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) struct list_head pending_asts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) struct list_head pending_basts;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) struct list_head tracking_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120) unsigned int purge_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) spinlock_t spinlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) spinlock_t ast_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) spinlock_t track_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124) char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) u8 node_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) u32 key;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) u8 joining_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) u8 migrate_done; /* set to 1 means node has migrated all lock resources */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) wait_queue_head_t dlm_join_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) unsigned long live_nodes_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131) unsigned long domain_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) unsigned long exit_domain_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133) unsigned long recovery_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) struct dlm_recovery_ctxt reco;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) spinlock_t master_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136) struct hlist_head **master_hash;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) struct list_head mle_hb_events;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) /* these give a really vague idea of the system load */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) atomic_t mle_tot_count[DLM_MLE_NUM_TYPES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) atomic_t mle_cur_count[DLM_MLE_NUM_TYPES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) atomic_t res_tot_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) atomic_t res_cur_count;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145) struct dentry *dlm_debugfs_subroot;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) /* NOTE: Next three are protected by dlm_domain_lock */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) struct kref dlm_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 149) enum dlm_ctxt_state dlm_state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 150) unsigned int num_joins;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 151)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 152) struct o2hb_callback_func dlm_hb_up;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 153) struct o2hb_callback_func dlm_hb_down;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 154) struct task_struct *dlm_thread_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 155) struct task_struct *dlm_reco_thread_task;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 156) struct workqueue_struct *dlm_worker;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 157) wait_queue_head_t dlm_thread_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 158) wait_queue_head_t dlm_reco_thread_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 159) wait_queue_head_t ast_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 160) wait_queue_head_t migration_wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 161)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 162) struct work_struct dispatched_work;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 163) struct list_head work_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 164) spinlock_t work_lock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 165) struct list_head dlm_domain_handlers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 166) struct list_head dlm_eviction_callbacks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 167)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 168) /* The filesystem specifies this at domain registration. We
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 169) * cache it here to know what to tell other nodes. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 170) struct dlm_protocol_version fs_locking_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 171) /* This is the inter-dlm communication version */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 172) struct dlm_protocol_version dlm_locking_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 173) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 174)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 175) static inline struct hlist_head *dlm_lockres_hash(struct dlm_ctxt *dlm, unsigned i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 176) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 177) return dlm->lockres_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] + (i % DLM_BUCKETS_PER_PAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 178) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 179)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 180) static inline struct hlist_head *dlm_master_hash(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 181) unsigned i)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 182) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 183) return dlm->master_hash[(i / DLM_BUCKETS_PER_PAGE) % DLM_HASH_PAGES] +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 184) (i % DLM_BUCKETS_PER_PAGE);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 185) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 186)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 187) /* these keventd work queue items are for less-frequently
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 188) * called functions that cannot be directly called from the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 189) * net message handlers for some reason, usually because
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 190) * they need to send net messages of their own. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 191) void dlm_dispatch_work(struct work_struct *work);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 192)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 193) struct dlm_lock_resource;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 194) struct dlm_work_item;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 195)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 196) typedef void (dlm_workfunc_t)(struct dlm_work_item *, void *);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 197)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 198) struct dlm_request_all_locks_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 199) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 200) u8 reco_master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 201) u8 dead_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 202) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 203)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 204) struct dlm_mig_lockres_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 205) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 206) struct dlm_lock_resource *lockres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 207) u8 real_master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 208) u8 extra_ref;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 209) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 210)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 211) struct dlm_assert_master_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 212) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 213) struct dlm_lock_resource *lockres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 214) u8 request_from;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 215) u32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 216) unsigned ignore_higher:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 217) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 218)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 219) struct dlm_deref_lockres_priv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 220) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 221) struct dlm_lock_resource *deref_res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 222) u8 deref_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 223) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 224)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 225) struct dlm_work_item
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 226) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 227) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 228) dlm_workfunc_t *func;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 229) struct dlm_ctxt *dlm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 230) void *data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 231) union {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 232) struct dlm_request_all_locks_priv ral;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 233) struct dlm_mig_lockres_priv ml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 234) struct dlm_assert_master_priv am;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 235) struct dlm_deref_lockres_priv dl;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 236) } u;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 237) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 238)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 239) static inline void dlm_init_work_item(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 240) struct dlm_work_item *i,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 241) dlm_workfunc_t *f, void *data)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 242) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 243) memset(i, 0, sizeof(*i));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 244) i->func = f;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 245) INIT_LIST_HEAD(&i->list);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 246) i->data = data;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 247) i->dlm = dlm; /* must have already done a dlm_grab on this! */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 248) }
^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)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 252) static inline void __dlm_set_joining_node(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 253) u8 node)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 254) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 255) assert_spin_locked(&dlm->spinlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 256)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 257) dlm->joining_node = node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 258) wake_up(&dlm->dlm_join_events);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 259) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 260)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 261) #define DLM_LOCK_RES_UNINITED 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 262) #define DLM_LOCK_RES_RECOVERING 0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 263) #define DLM_LOCK_RES_READY 0x00000004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 264) #define DLM_LOCK_RES_DIRTY 0x00000008
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 265) #define DLM_LOCK_RES_IN_PROGRESS 0x00000010
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 266) #define DLM_LOCK_RES_MIGRATING 0x00000020
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 267) #define DLM_LOCK_RES_DROPPING_REF 0x00000040
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 268) #define DLM_LOCK_RES_BLOCK_DIRTY 0x00001000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 269) #define DLM_LOCK_RES_SETREF_INPROG 0x00002000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 270) #define DLM_LOCK_RES_RECOVERY_WAITING 0x00004000
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 271)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 272) /* max milliseconds to wait to sync up a network failure with a node death */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 273) #define DLM_NODE_DEATH_WAIT_MAX (5 * 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 274)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 275) #define DLM_PURGE_INTERVAL_MS (8 * 1000)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 276)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 277) struct dlm_lock_resource
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 278) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 279) /* WARNING: Please see the comment in dlm_init_lockres before
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 280) * adding fields here. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 281) struct hlist_node hash_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 282) struct qstr lockname;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 283) struct kref refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 284)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 285) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 286) * Please keep granted, converting, and blocked in this order,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 287) * as some funcs want to iterate over all lists.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 288) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 289) * All four lists are protected by the hash's reference.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 290) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 291) struct list_head granted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 292) struct list_head converting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 293) struct list_head blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 294) struct list_head purge;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 295)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 296) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 297) * These two lists require you to hold an additional reference
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 298) * while they are on the list.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 299) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 300) struct list_head dirty;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 301) struct list_head recovering; // dlm_recovery_ctxt.resources list
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 302)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 303) /* Added during init and removed during release */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 304) struct list_head tracking; /* dlm->tracking_list */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 305)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 306) /* unused lock resources have their last_used stamped and are
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 307) * put on a list for the dlm thread to run. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 308) unsigned long last_used;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 309)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 310) struct dlm_ctxt *dlm;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 311)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 312) unsigned migration_pending:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 313) atomic_t asts_reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 314) spinlock_t spinlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 315) wait_queue_head_t wq;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 316) u8 owner; //node which owns the lock resource, or unknown
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 317) u16 state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 318) char lvb[DLM_LVB_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 319) unsigned int inflight_locks;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 320) unsigned int inflight_assert_workers;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 321) unsigned long refmap[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 322) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 323)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 324) struct dlm_migratable_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 325) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 326) __be64 cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 327)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 328) /* these 3 are just padding for the in-memory structure, but
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 329) * list and flags are actually used when sent over the wire */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 330) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 331) u8 list; // 0=granted, 1=converting, 2=blocked
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 332) u8 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 333)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 334) s8 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 335) s8 convert_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 336) s8 highest_blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 337) u8 node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 338) }; // 16 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 339)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 340) struct dlm_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 341) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 342) struct dlm_migratable_lock ml;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 343)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 344) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 345) struct list_head ast_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 346) struct list_head bast_list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 347) struct dlm_lock_resource *lockres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 348) spinlock_t spinlock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 349) struct kref lock_refs;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 350)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 351) // ast and bast must be callable while holding a spinlock!
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 352) dlm_astlockfunc_t *ast;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 353) dlm_bastlockfunc_t *bast;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 354) void *astdata;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 355) struct dlm_lockstatus *lksb;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 356) unsigned ast_pending:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 357) bast_pending:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 358) convert_pending:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 359) lock_pending:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 360) cancel_pending:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 361) unlock_pending:1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 362) lksb_kernel_allocated:1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 363) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 364)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 365) enum dlm_lockres_list {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 366) DLM_GRANTED_LIST = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 367) DLM_CONVERTING_LIST = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 368) DLM_BLOCKED_LIST = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 369) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 370)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 371) static inline int dlm_lvb_is_empty(char *lvb)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 372) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 373) int i;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 374) for (i=0; i<DLM_LVB_LEN; i++)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 375) if (lvb[i])
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 376) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 377) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 378) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 379)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 380) static inline char *dlm_list_in_text(enum dlm_lockres_list idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 381) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 382) if (idx == DLM_GRANTED_LIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 383) return "granted";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 384) else if (idx == DLM_CONVERTING_LIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 385) return "converting";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 386) else if (idx == DLM_BLOCKED_LIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 387) return "blocked";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 388) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 389) return "unknown";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 390) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 391)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 392) static inline struct list_head *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 393) dlm_list_idx_to_ptr(struct dlm_lock_resource *res, enum dlm_lockres_list idx)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 394) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 395) struct list_head *ret = NULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 396) if (idx == DLM_GRANTED_LIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 397) ret = &res->granted;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 398) else if (idx == DLM_CONVERTING_LIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 399) ret = &res->converting;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 400) else if (idx == DLM_BLOCKED_LIST)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 401) ret = &res->blocked;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 402) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 403) BUG();
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 404) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 405) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 406)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 407)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 408)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 409)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 410) struct dlm_node_iter
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 411) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 412) unsigned long node_map[BITS_TO_LONGS(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 413) int curnode;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 414) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 415)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 416)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 417) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 418) DLM_MASTER_REQUEST_MSG = 500,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 419) DLM_UNUSED_MSG1 = 501,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 420) DLM_ASSERT_MASTER_MSG = 502,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 421) DLM_CREATE_LOCK_MSG = 503,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 422) DLM_CONVERT_LOCK_MSG = 504,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 423) DLM_PROXY_AST_MSG = 505,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 424) DLM_UNLOCK_LOCK_MSG = 506,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 425) DLM_DEREF_LOCKRES_MSG = 507,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 426) DLM_MIGRATE_REQUEST_MSG = 508,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 427) DLM_MIG_LOCKRES_MSG = 509,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 428) DLM_QUERY_JOIN_MSG = 510,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 429) DLM_ASSERT_JOINED_MSG = 511,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 430) DLM_CANCEL_JOIN_MSG = 512,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 431) DLM_EXIT_DOMAIN_MSG = 513,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 432) DLM_MASTER_REQUERY_MSG = 514,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 433) DLM_LOCK_REQUEST_MSG = 515,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 434) DLM_RECO_DATA_DONE_MSG = 516,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 435) DLM_BEGIN_RECO_MSG = 517,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 436) DLM_FINALIZE_RECO_MSG = 518,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 437) DLM_QUERY_REGION = 519,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 438) DLM_QUERY_NODEINFO = 520,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 439) DLM_BEGIN_EXIT_DOMAIN_MSG = 521,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 440) DLM_DEREF_LOCKRES_DONE = 522,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 441) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 442)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 443) struct dlm_reco_node_data
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 444) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 445) int state;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 446) u8 node_num;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 447) struct list_head list;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 448) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 449)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 450) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 451) DLM_RECO_NODE_DATA_DEAD = -1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 452) DLM_RECO_NODE_DATA_INIT = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 453) DLM_RECO_NODE_DATA_REQUESTING = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 454) DLM_RECO_NODE_DATA_REQUESTED = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 455) DLM_RECO_NODE_DATA_RECEIVING = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 456) DLM_RECO_NODE_DATA_DONE = 4,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 457) DLM_RECO_NODE_DATA_FINALIZE_SENT = 5,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 458) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 459)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 460)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 461) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 462) DLM_MASTER_RESP_NO = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 463) DLM_MASTER_RESP_YES = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 464) DLM_MASTER_RESP_MAYBE = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 465) DLM_MASTER_RESP_ERROR = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 466) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 467)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 468)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 469) struct dlm_master_request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 470) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 471) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 472) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 473) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 474) __be32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 475)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 476) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 477) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 478)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 479) #define DLM_ASSERT_RESPONSE_REASSERT 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 480) #define DLM_ASSERT_RESPONSE_MASTERY_REF 0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 481)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 482) #define DLM_ASSERT_MASTER_MLE_CLEANUP 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 483) #define DLM_ASSERT_MASTER_REQUERY 0x00000002
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 484) #define DLM_ASSERT_MASTER_FINISH_MIGRATION 0x00000004
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 485) struct dlm_assert_master
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 486) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 487) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 488) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 489) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 490) __be32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 491)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 492) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 493) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 494)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 495) #define DLM_MIGRATE_RESPONSE_MASTERY_REF 0x00000001
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 496)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 497) struct dlm_migrate_request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 498) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 499) u8 master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 500) u8 new_master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 501) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 502) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 503) __be32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 504) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 505) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 506)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 507) struct dlm_master_requery
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 508) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 509) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 510) u8 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 511) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 512) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 513) __be32 pad3;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 514) u8 name[O2NM_MAX_NAME_LEN];
^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) #define DLM_MRES_RECOVERY 0x01
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 518) #define DLM_MRES_MIGRATION 0x02
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 519) #define DLM_MRES_ALL_DONE 0x04
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 520)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 521) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 522) * We would like to get one whole lockres into a single network
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 523) * message whenever possible. Generally speaking, there will be
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 524) * at most one dlm_lock on a lockres for each node in the cluster,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 525) * plus (infrequently) any additional locks coming in from userdlm.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 526) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 527) * struct _dlm_lockres_page
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 528) * {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 529) * dlm_migratable_lockres mres;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 530) * dlm_migratable_lock ml[DLM_MAX_MIGRATABLE_LOCKS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 531) * u8 pad[DLM_MIG_LOCKRES_RESERVED];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 532) * };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 533) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 534) * from ../cluster/tcp.h
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 535) * O2NET_MAX_PAYLOAD_BYTES (4096 - sizeof(net_msg))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 536) * (roughly 4080 bytes)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 537) * and sizeof(dlm_migratable_lockres) = 112 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 538) * and sizeof(dlm_migratable_lock) = 16 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 539) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 540) * Choosing DLM_MAX_MIGRATABLE_LOCKS=240 and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 541) * DLM_MIG_LOCKRES_RESERVED=128 means we have this:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 542) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 543) * (DLM_MAX_MIGRATABLE_LOCKS * sizeof(dlm_migratable_lock)) +
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 544) * sizeof(dlm_migratable_lockres) + DLM_MIG_LOCKRES_RESERVED =
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 545) * NET_MAX_PAYLOAD_BYTES
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 546) * (240 * 16) + 112 + 128 = 4080
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 547) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 548) * So a lockres would need more than 240 locks before it would
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 549) * use more than one network packet to recover. Not too bad.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 550) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 551) #define DLM_MAX_MIGRATABLE_LOCKS 240
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 552)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 553) struct dlm_migratable_lockres
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 554) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 555) u8 master;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 556) u8 lockname_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 557) u8 num_locks; // locks sent in this structure
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 558) u8 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 559) __be32 total_locks; // locks to be sent for this migration cookie
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 560) __be64 mig_cookie; // cookie for this lockres migration
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 561) // or zero if not needed
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 562) // 16 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 563) u8 lockname[DLM_LOCKID_NAME_MAX];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 564) // 48 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 565) u8 lvb[DLM_LVB_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 566) // 112 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 567) struct dlm_migratable_lock ml[]; // 16 bytes each, begins at byte 112
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 568) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 569) #define DLM_MIG_LOCKRES_MAX_LEN \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 570) (sizeof(struct dlm_migratable_lockres) + \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 571) (sizeof(struct dlm_migratable_lock) * \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 572) DLM_MAX_MIGRATABLE_LOCKS) )
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 573)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 574) /* from above, 128 bytes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 575) * for some undetermined future use */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 576) #define DLM_MIG_LOCKRES_RESERVED (O2NET_MAX_PAYLOAD_BYTES - \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 577) DLM_MIG_LOCKRES_MAX_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 578)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 579) struct dlm_create_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 580) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 581) __be64 cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 582)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 583) __be32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 584) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 585) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 586) s8 requested_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 587) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 588)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 589) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 590) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 591)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 592) struct dlm_convert_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 593) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 594) __be64 cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 595)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 596) __be32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 597) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 598) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 599) s8 requested_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 600) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 601)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 602) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 603)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 604) s8 lvb[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 605) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 606) #define DLM_CONVERT_LOCK_MAX_LEN (sizeof(struct dlm_convert_lock)+DLM_LVB_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 607)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 608) struct dlm_unlock_lock
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 609) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 610) __be64 cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 611)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 612) __be32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 613) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 614) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 615) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 616)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 617) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 618)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 619) s8 lvb[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 620) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 621) #define DLM_UNLOCK_LOCK_MAX_LEN (sizeof(struct dlm_unlock_lock)+DLM_LVB_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 622)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 623) struct dlm_proxy_ast
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 624) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 625) __be64 cookie;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 626)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 627) __be32 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 628) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 629) u8 type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 630) u8 blocked_type;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 631) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 632)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 633) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 634)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 635) s8 lvb[];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 636) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 637) #define DLM_PROXY_AST_MAX_LEN (sizeof(struct dlm_proxy_ast)+DLM_LVB_LEN)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 638)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 639) #define DLM_MOD_KEY (0x666c6172)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 640) enum dlm_query_join_response_code {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 641) JOIN_DISALLOW = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 642) JOIN_OK = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 643) JOIN_OK_NO_MAP = 2,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 644) JOIN_PROTOCOL_MISMATCH = 3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 645) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 646)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 647) struct dlm_query_join_packet {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 648) u8 code; /* Response code. dlm_minor and fs_minor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 649) are only valid if this is JOIN_OK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 650) u8 dlm_minor; /* The minor version of the protocol the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 651) dlm is speaking. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 652) u8 fs_minor; /* The minor version of the protocol the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 653) filesystem is speaking. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 654) u8 reserved;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 655) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 656)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 657) union dlm_query_join_response {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 658) __be32 intval;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 659) struct dlm_query_join_packet packet;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 660) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 661)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 662) struct dlm_lock_request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 663) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 664) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 665) u8 dead_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 666) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 667) __be32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 668) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 669)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 670) struct dlm_reco_data_done
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 671) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 672) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 673) u8 dead_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 674) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 675) __be32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 676)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 677) /* unused for now */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 678) /* eventually we can use this to attempt
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 679) * lvb recovery based on each node's info */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 680) u8 reco_lvb[DLM_LVB_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 681) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 682)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 683) struct dlm_begin_reco
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 684) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 685) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 686) u8 dead_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 687) __be16 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 688) __be32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 689) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 690)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 691) struct dlm_query_join_request
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 692) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 693) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 694) u8 pad1[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 695) u8 name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 696) struct dlm_protocol_version dlm_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 697) struct dlm_protocol_version fs_proto;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 698) u8 domain[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 699) u8 node_map[BITS_TO_BYTES(O2NM_MAX_NODES)];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 700) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 701)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 702) struct dlm_assert_joined
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 703) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 704) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 705) u8 pad1[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 706) u8 name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 707) u8 domain[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 708) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 709)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 710) struct dlm_cancel_join
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 711) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 712) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 713) u8 pad1[2];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 714) u8 name_len;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 715) u8 domain[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 716) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 717)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 718) struct dlm_query_region {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 719) u8 qr_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 720) u8 qr_numregions;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 721) u8 qr_namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 722) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 723) u8 qr_domain[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 724) u8 qr_regions[O2HB_MAX_REGION_NAME_LEN * O2NM_MAX_REGIONS];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 725) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 726)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 727) struct dlm_node_info {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 728) u8 ni_nodenum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 729) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 730) __be16 ni_ipv4_port;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 731) __be32 ni_ipv4_address;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 732) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 733)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 734) struct dlm_query_nodeinfo {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 735) u8 qn_nodenum;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 736) u8 qn_numnodes;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 737) u8 qn_namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 738) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 739) u8 qn_domain[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 740) struct dlm_node_info qn_nodes[O2NM_MAX_NODES];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 741) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 742)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 743) struct dlm_exit_domain
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 744) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 745) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 746) u8 pad1[3];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 747) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 748)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 749) struct dlm_finalize_reco
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 750) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 751) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 752) u8 dead_node;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 753) u8 flags;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 754) u8 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 755) __be32 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 756) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 757)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 758) struct dlm_deref_lockres
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 759) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 760) u32 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 761) u16 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 762) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 763) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 764)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 765) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 766) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 767)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 768) enum {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 769) DLM_DEREF_RESPONSE_DONE = 0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 770) DLM_DEREF_RESPONSE_INPROG = 1,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 771) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 772)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 773) struct dlm_deref_lockres_done {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 774) u32 pad1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 775) u16 pad2;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 776) u8 node_idx;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 777) u8 namelen;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 778)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 779) u8 name[O2NM_MAX_NAME_LEN];
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 780) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 781)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 782) static inline enum dlm_status
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 783) __dlm_lockres_state_to_status(struct dlm_lock_resource *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 784) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 785) enum dlm_status status = DLM_NORMAL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 786)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 787) assert_spin_locked(&res->spinlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 788)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 789) if (res->state & (DLM_LOCK_RES_RECOVERING|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 790) DLM_LOCK_RES_RECOVERY_WAITING))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 791) status = DLM_RECOVERING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 792) else if (res->state & DLM_LOCK_RES_MIGRATING)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 793) status = DLM_MIGRATING;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 794) else if (res->state & DLM_LOCK_RES_IN_PROGRESS)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 795) status = DLM_FORWARD;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 796)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 797) return status;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 798) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 799)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 800) static inline u8 dlm_get_lock_cookie_node(u64 cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 801) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 802) u8 ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 803) cookie >>= 56;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 804) ret = (u8)(cookie & 0xffULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 805) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 806) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 807)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 808) static inline unsigned long long dlm_get_lock_cookie_seq(u64 cookie)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 809) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 810) unsigned long long ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 811) ret = ((unsigned long long)cookie) & 0x00ffffffffffffffULL;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 812) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 813) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 814)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 815) struct dlm_lock * dlm_new_lock(int type, u8 node, u64 cookie,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 816) struct dlm_lockstatus *lksb);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 817) void dlm_lock_get(struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 818) void dlm_lock_put(struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 819)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 820) void dlm_lock_attach_lockres(struct dlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 821) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 822)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 823) int dlm_create_lock_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 824) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 825) int dlm_convert_lock_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 826) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 827) int dlm_proxy_ast_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 828) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 829)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 830) void dlm_revert_pending_convert(struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 831) struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 832) void dlm_revert_pending_lock(struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 833) struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 834)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 835) int dlm_unlock_lock_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 836) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 837) void dlm_commit_pending_cancel(struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 838) struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 839) void dlm_commit_pending_unlock(struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 840) struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 841)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 842) int dlm_launch_thread(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 843) void dlm_complete_thread(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 844) int dlm_launch_recovery_thread(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 845) void dlm_complete_recovery_thread(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 846) void dlm_wait_for_recovery(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 847) void dlm_kick_recovery_thread(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 848) int dlm_is_node_dead(struct dlm_ctxt *dlm, u8 node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 849) void dlm_wait_for_node_death(struct dlm_ctxt *dlm, u8 node, int timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 850) void dlm_wait_for_node_recovery(struct dlm_ctxt *dlm, u8 node, int timeout);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 851)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 852) void dlm_put(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 853) struct dlm_ctxt *dlm_grab(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 854) int dlm_domain_fully_joined(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 855)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 856) void __dlm_lockres_calc_usage(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 857) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 858) void dlm_lockres_calc_usage(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 859) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 860) static inline void dlm_lockres_get(struct dlm_lock_resource *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 861) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 862) /* This is called on every lookup, so it might be worth
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 863) * inlining. */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 864) kref_get(&res->refs);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 865) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 866) void dlm_lockres_put(struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 867) void __dlm_unhash_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 868) void __dlm_insert_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 869) struct dlm_lock_resource * __dlm_lookup_lockres_full(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 870) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 871) unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 872) unsigned int hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 873) struct dlm_lock_resource * __dlm_lookup_lockres(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 874) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 875) unsigned int len,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 876) unsigned int hash);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 877) struct dlm_lock_resource * dlm_lookup_lockres(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 878) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 879) unsigned int len);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 880)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 881) int dlm_is_host_down(int errno);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 882)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 883) struct dlm_lock_resource * dlm_get_lock_resource(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 884) const char *lockid,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 885) int namelen,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 886) int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 887) struct dlm_lock_resource *dlm_new_lockres(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 888) const char *name,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 889) unsigned int namelen);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 890)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 891) void dlm_lockres_set_refmap_bit(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 892) struct dlm_lock_resource *res, int bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 893) void dlm_lockres_clear_refmap_bit(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 894) struct dlm_lock_resource *res, int bit);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 895)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 896) void dlm_lockres_drop_inflight_ref(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 897) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 898) void dlm_lockres_grab_inflight_ref(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 899) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 900)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 901) void __dlm_lockres_grab_inflight_worker(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 902) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 903)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 904) void dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 905) void dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 906) void __dlm_queue_ast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 907) void __dlm_queue_bast(struct dlm_ctxt *dlm, struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 908) void dlm_do_local_ast(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 909) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 910) struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 911) int dlm_do_remote_ast(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 912) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 913) struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 914) void dlm_do_local_bast(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 915) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 916) struct dlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 917) int blocked_type);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 918) int dlm_send_proxy_ast_msg(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 919) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 920) struct dlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 921) int msg_type,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 922) int blocked_type, int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 923) static inline int dlm_send_proxy_bast(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 924) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 925) struct dlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 926) int blocked_type)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 927) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 928) return dlm_send_proxy_ast_msg(dlm, res, lock, DLM_BAST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 929) blocked_type, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 930) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 931)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 932) static inline int dlm_send_proxy_ast(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 933) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 934) struct dlm_lock *lock,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 935) int flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 936) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 937) return dlm_send_proxy_ast_msg(dlm, res, lock, DLM_AST,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 938) 0, flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 939) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 940)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 941) void dlm_print_one_lock_resource(struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 942) void __dlm_print_one_lock_resource(struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 943)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 944) void dlm_kick_thread(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 945) void __dlm_dirty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 946)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 947)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 948) void dlm_hb_node_down_cb(struct o2nm_node *node, int idx, void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 949) void dlm_hb_node_up_cb(struct o2nm_node *node, int idx, void *data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 950)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 951) int dlm_empty_lockres(struct dlm_ctxt *dlm, struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 952) int dlm_finish_migration(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 953) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 954) u8 old_master);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 955) void dlm_lockres_release_ast(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 956) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 957) void __dlm_lockres_reserve_ast(struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 958)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 959) int dlm_master_request_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 960) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 961) int dlm_assert_master_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 962) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 963) void dlm_assert_master_post_handler(int status, void *data, void *ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 964) int dlm_deref_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 965) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 966) int dlm_deref_lockres_done_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 967) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 968) int dlm_migrate_request_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 969) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 970) int dlm_mig_lockres_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 971) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 972) int dlm_master_requery_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 973) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 974) int dlm_request_all_locks_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 975) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 976) int dlm_reco_data_done_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 977) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 978) int dlm_begin_reco_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 979) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 980) int dlm_finalize_reco_handler(struct o2net_msg *msg, u32 len, void *data,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 981) void **ret_data);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 982) int dlm_do_master_requery(struct dlm_ctxt *dlm, struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 983) u8 nodenum, u8 *real_master);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 984)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 985) void __dlm_do_purge_lockres(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 986) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 987)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 988) int dlm_dispatch_assert_master(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 989) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 990) int ignore_higher,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 991) u8 request_from,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 992) u32 flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 993)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 994)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 995) int dlm_send_one_lockres(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 996) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 997) struct dlm_migratable_lockres *mres,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 998) u8 send_to,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 999) u8 flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1000) void dlm_move_lockres_to_recovery_list(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1001) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1002)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1003) /* will exit holding res->spinlock, but may drop in function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1004) void __dlm_wait_on_lockres_flags(struct dlm_lock_resource *res, int flags);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1005)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1006) /* will exit holding res->spinlock, but may drop in function */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1007) static inline void __dlm_wait_on_lockres(struct dlm_lock_resource *res)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1008) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1009) __dlm_wait_on_lockres_flags(res, (DLM_LOCK_RES_IN_PROGRESS|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1010) DLM_LOCK_RES_RECOVERING|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1011) DLM_LOCK_RES_RECOVERY_WAITING|
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1012) DLM_LOCK_RES_MIGRATING));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1013) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1014)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1015) void __dlm_unlink_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1016) void __dlm_insert_mle(struct dlm_ctxt *dlm, struct dlm_master_list_entry *mle);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1017)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1018) /* create/destroy slab caches */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1019) int dlm_init_master_caches(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1020) void dlm_destroy_master_caches(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1021)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1022) int dlm_init_lock_cache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1023) void dlm_destroy_lock_cache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1024)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1025) int dlm_init_mle_cache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1026) void dlm_destroy_mle_cache(void);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1027)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1028) void dlm_hb_event_notify_attached(struct dlm_ctxt *dlm, int idx, int node_up);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1029) int dlm_drop_lockres_ref(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1030) struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1031) void dlm_clean_master_list(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1032) u8 dead_node);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1033) void dlm_force_free_mles(struct dlm_ctxt *dlm);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1034) int dlm_lock_basts_flushed(struct dlm_ctxt *dlm, struct dlm_lock *lock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1035) int __dlm_lockres_has_locks(struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1036) int __dlm_lockres_unused(struct dlm_lock_resource *res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1037)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1038) static inline const char * dlm_lock_mode_name(int mode)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1039) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1040) switch (mode) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1041) case LKM_EXMODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1042) return "EX";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1043) case LKM_PRMODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1044) return "PR";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1045) case LKM_NLMODE:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1046) return "NL";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1047) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1048) return "UNKNOWN";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1049) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1050)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1051)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1052) static inline int dlm_lock_compatible(int existing, int request)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1053) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1054) /* NO_LOCK compatible with all */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1055) if (request == LKM_NLMODE ||
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1056) existing == LKM_NLMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1057) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1058)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1059) /* EX incompatible with all non-NO_LOCK */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1060) if (request == LKM_EXMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1061) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1062)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1063) /* request must be PR, which is compatible with PR */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1064) if (existing == LKM_PRMODE)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1065) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1066)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1067) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1068) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1069)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1070) static inline int dlm_lock_on_list(struct list_head *head,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1071) struct dlm_lock *lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1072) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1073) struct dlm_lock *tmplock;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1074)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1075) list_for_each_entry(tmplock, head, list) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1076) if (tmplock == lock)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1077) return 1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1078) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1079) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1080) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1081)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1082)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1083) static inline enum dlm_status dlm_err_to_dlm_status(int err)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1084) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1085) enum dlm_status ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1086) if (err == -ENOMEM)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1087) ret = DLM_SYSERR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1088) else if (err == -ETIMEDOUT || o2net_link_down(err, NULL))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1089) ret = DLM_NOLOCKMGR;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1090) else if (err == -EINVAL)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1091) ret = DLM_BADPARAM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1092) else if (err == -ENAMETOOLONG)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1093) ret = DLM_IVBUFLEN;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1094) else
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1095) ret = DLM_BADARGS;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1096) return ret;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1097) }
^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) static inline void dlm_node_iter_init(unsigned long *map,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1101) struct dlm_node_iter *iter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1102) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1103) memcpy(iter->node_map, map, sizeof(iter->node_map));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1104) iter->curnode = -1;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1105) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1106)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1107) static inline int dlm_node_iter_next(struct dlm_node_iter *iter)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1108) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1109) int bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1110) bit = find_next_bit(iter->node_map, O2NM_MAX_NODES, iter->curnode+1);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1111) if (bit >= O2NM_MAX_NODES) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1112) iter->curnode = O2NM_MAX_NODES;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1113) return -ENOENT;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1114) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1115) iter->curnode = bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1116) return bit;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1117) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1118)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1119) static inline void dlm_set_lockres_owner(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1120) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1121) u8 owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1122) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1123) assert_spin_locked(&res->spinlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1125) res->owner = owner;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1126) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1127)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1128) static inline void dlm_change_lockres_owner(struct dlm_ctxt *dlm,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1129) struct dlm_lock_resource *res,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1130) u8 owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1131) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1132) assert_spin_locked(&res->spinlock);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1134) if (owner != res->owner)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1135) dlm_set_lockres_owner(dlm, res, owner);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1136) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1137)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1138) #endif /* DLMCOMMON_H */
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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