1 /* SPDX-License-Identifier: GPL-2.0 */
3 * Copyright (C) 2008 Oracle. All rights reserved.
6 #ifndef BTRFS_TREE_LOG_H
7 #define BTRFS_TREE_LOG_H
11 #include "transaction.h"
13 /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
14 #define BTRFS_NO_LOG_SYNC 256
16 /* We can't use the tree log for whatever reason, force a transaction commit */
17 #define BTRFS_LOG_FORCE_COMMIT (1)
19 struct btrfs_log_ctx {
22 bool log_new_dentries;
23 bool logging_new_name;
24 bool logging_new_delayed_dentries;
25 /* Indicate if the inode being logged was logged before. */
27 /* Tracks the last logged dir item/index key offset. */
28 u64 last_dir_item_offset;
30 struct list_head list;
31 /* Only used for fast fsyncs. */
32 struct list_head ordered_extents;
33 struct list_head conflict_inodes;
34 int num_conflict_inodes;
35 bool logging_conflict_inodes;
38 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
43 ctx->log_new_dentries = false;
44 ctx->logging_new_name = false;
45 ctx->logging_new_delayed_dentries = false;
46 ctx->logged_before = false;
48 INIT_LIST_HEAD(&ctx->list);
49 INIT_LIST_HEAD(&ctx->ordered_extents);
50 INIT_LIST_HEAD(&ctx->conflict_inodes);
51 ctx->num_conflict_inodes = 0;
52 ctx->logging_conflict_inodes = false;
55 static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
57 struct btrfs_ordered_extent *ordered;
58 struct btrfs_ordered_extent *tmp;
60 ASSERT(inode_is_locked(ctx->inode));
62 list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) {
63 list_del_init(&ordered->log_list);
64 btrfs_put_ordered_extent(ordered);
68 static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
70 WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);
73 static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
75 return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==
79 int btrfs_sync_log(struct btrfs_trans_handle *trans,
80 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
81 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
82 int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
83 struct btrfs_fs_info *fs_info);
84 int btrfs_recover_log_trees(struct btrfs_root *tree_root);
85 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
86 struct dentry *dentry,
87 struct btrfs_log_ctx *ctx);
88 void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
89 struct btrfs_root *root,
90 const struct fscrypt_str *name,
91 struct btrfs_inode *dir, u64 index);
92 void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
93 struct btrfs_root *root,
94 const struct fscrypt_str *name,
95 struct btrfs_inode *inode, u64 dirid);
96 void btrfs_end_log_trans(struct btrfs_root *root);
97 void btrfs_pin_log_trans(struct btrfs_root *root);
98 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
99 struct btrfs_inode *dir, struct btrfs_inode *inode,
101 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
102 struct btrfs_inode *dir);
103 void btrfs_log_new_name(struct btrfs_trans_handle *trans,
104 struct dentry *old_dentry, struct btrfs_inode *old_dir,
105 u64 old_dir_index, struct dentry *parent);