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
10 #include "transaction.h"
12 /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
13 #define BTRFS_NO_LOG_SYNC 256
15 struct btrfs_log_ctx {
19 bool log_new_dentries;
21 struct list_head list;
24 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
30 ctx->log_new_dentries = false;
32 INIT_LIST_HEAD(&ctx->list);
35 static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
36 struct btrfs_trans_handle *trans)
38 WRITE_ONCE(fs_info->last_trans_log_full_commit, trans->transid);
41 static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
42 struct btrfs_trans_handle *trans)
44 return READ_ONCE(fs_info->last_trans_log_full_commit) ==
48 int btrfs_sync_log(struct btrfs_trans_handle *trans,
49 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
50 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
51 int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
52 struct btrfs_fs_info *fs_info);
53 int btrfs_recover_log_trees(struct btrfs_root *tree_root);
54 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
55 struct dentry *dentry,
58 struct btrfs_log_ctx *ctx);
59 int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
60 struct btrfs_root *root,
61 const char *name, int name_len,
62 struct btrfs_inode *dir, u64 index);
63 int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
64 struct btrfs_root *root,
65 const char *name, int name_len,
66 struct btrfs_inode *inode, u64 dirid);
67 void btrfs_end_log_trans(struct btrfs_root *root);
68 int btrfs_pin_log_trans(struct btrfs_root *root);
69 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
70 struct btrfs_inode *dir, struct btrfs_inode *inode,
72 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
73 struct btrfs_inode *dir);
74 /* Return values for btrfs_log_new_name() */
76 BTRFS_DONT_NEED_TRANS_COMMIT,
77 BTRFS_NEED_TRANS_COMMIT,
78 BTRFS_DONT_NEED_LOG_SYNC,
81 int btrfs_log_new_name(struct btrfs_trans_handle *trans,
82 struct btrfs_inode *inode, struct btrfs_inode *old_dir,
83 struct dentry *parent,
84 bool sync_log, struct btrfs_log_ctx *ctx);