1 /* SPDX-License-Identifier: GPL-2.0 */
2 /*
3 * Copyright (C) 2008 Oracle. All rights reserved.
4 */
5
6 #ifndef BTRFS_TREE_LOG_H
7 #define BTRFS_TREE_LOG_H
8
9 #include "ctree.h"
10 #include "transaction.h"
11
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
14
15 struct btrfs_log_ctx {
16 int log_ret;
17 int log_transid;
18 bool log_new_dentries;
19 bool logging_new_name;
20 struct inode *inode;
21 struct list_head list;
22 /* Only used for fast fsyncs. */
23 struct list_head ordered_extents;
24 };
25
btrfs_init_log_ctx(struct btrfs_log_ctx * ctx,struct inode * inode)26 static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
27 struct inode *inode)
28 {
29 ctx->log_ret = 0;
30 ctx->log_transid = 0;
31 ctx->log_new_dentries = false;
32 ctx->logging_new_name = false;
33 ctx->inode = inode;
34 INIT_LIST_HEAD(&ctx->list);
35 INIT_LIST_HEAD(&ctx->ordered_extents);
36 }
37
btrfs_release_log_ctx_extents(struct btrfs_log_ctx * ctx)38 static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
39 {
40 struct btrfs_ordered_extent *ordered;
41 struct btrfs_ordered_extent *tmp;
42
43 ASSERT(inode_is_locked(ctx->inode));
44
45 list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) {
46 list_del_init(&ordered->log_list);
47 btrfs_put_ordered_extent(ordered);
48 }
49 }
50
btrfs_set_log_full_commit(struct btrfs_trans_handle * trans)51 static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
52 {
53 WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);
54 }
55
btrfs_need_log_full_commit(struct btrfs_trans_handle * trans)56 static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
57 {
58 return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==
59 trans->transid;
60 }
61
62 int btrfs_sync_log(struct btrfs_trans_handle *trans,
63 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
64 int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
65 int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
66 struct btrfs_fs_info *fs_info);
67 int btrfs_recover_log_trees(struct btrfs_root *tree_root);
68 int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
69 struct dentry *dentry,
70 struct btrfs_log_ctx *ctx);
71 int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
72 struct btrfs_root *root,
73 const char *name, int name_len,
74 struct btrfs_inode *dir, u64 index);
75 int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
76 struct btrfs_root *root,
77 const char *name, int name_len,
78 struct btrfs_inode *inode, u64 dirid);
79 void btrfs_end_log_trans(struct btrfs_root *root);
80 void btrfs_pin_log_trans(struct btrfs_root *root);
81 void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
82 struct btrfs_inode *dir, struct btrfs_inode *inode,
83 int for_rename);
84 void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
85 struct btrfs_inode *dir);
86 void btrfs_log_new_name(struct btrfs_trans_handle *trans,
87 struct btrfs_inode *inode, struct btrfs_inode *old_dir,
88 struct dentry *parent);
89
90 #endif
91