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9888c340 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
e02119d5 CM |
2 | /* |
3 | * Copyright (C) 2008 Oracle. All rights reserved. | |
e02119d5 CM |
4 | */ |
5 | ||
9888c340 DS |
6 | #ifndef BTRFS_TREE_LOG_H |
7 | #define BTRFS_TREE_LOG_H | |
e02119d5 | 8 | |
9b569ea0 | 9 | #include "messages.h" |
995946dd MX |
10 | #include "ctree.h" |
11 | #include "transaction.h" | |
12 | ||
257c62e1 CM |
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 | |
15 | ||
5cce1780 FM |
16 | /* |
17 | * We can't use the tree log for whatever reason, force a transaction commit. | |
18 | * We use a negative value because there are functions through the logging code | |
19 | * that need to return an error (< 0 value), false (0) or true (1). Any negative | |
20 | * value will do, as it will cause the log to be marked for a full sync. | |
21 | */ | |
22 | #define BTRFS_LOG_FORCE_COMMIT (-(MAX_ERRNO + 1)) | |
f31f09f6 | 23 | |
8b050d35 MX |
24 | struct btrfs_log_ctx { |
25 | int log_ret; | |
d1433deb | 26 | int log_transid; |
2f2ff0ee | 27 | bool log_new_dentries; |
75b463d2 | 28 | bool logging_new_name; |
30b80f3c | 29 | bool logging_new_delayed_dentries; |
0f8ce498 FM |
30 | /* Indicate if the inode being logged was logged before. */ |
31 | bool logged_before; | |
28a23593 | 32 | struct inode *inode; |
8b050d35 | 33 | struct list_head list; |
48778179 FM |
34 | /* Only used for fast fsyncs. */ |
35 | struct list_head ordered_extents; | |
e09d94c9 FM |
36 | struct list_head conflict_inodes; |
37 | int num_conflict_inodes; | |
38 | bool logging_conflict_inodes; | |
8b050d35 MX |
39 | }; |
40 | ||
28a23593 FM |
41 | static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, |
42 | struct inode *inode) | |
8b050d35 MX |
43 | { |
44 | ctx->log_ret = 0; | |
d1433deb | 45 | ctx->log_transid = 0; |
2f2ff0ee | 46 | ctx->log_new_dentries = false; |
75b463d2 | 47 | ctx->logging_new_name = false; |
30b80f3c | 48 | ctx->logging_new_delayed_dentries = false; |
0f8ce498 | 49 | ctx->logged_before = false; |
28a23593 | 50 | ctx->inode = inode; |
8b050d35 | 51 | INIT_LIST_HEAD(&ctx->list); |
48778179 | 52 | INIT_LIST_HEAD(&ctx->ordered_extents); |
e09d94c9 FM |
53 | INIT_LIST_HEAD(&ctx->conflict_inodes); |
54 | ctx->num_conflict_inodes = 0; | |
55 | ctx->logging_conflict_inodes = false; | |
48778179 FM |
56 | } |
57 | ||
58 | static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx) | |
59 | { | |
60 | struct btrfs_ordered_extent *ordered; | |
61 | struct btrfs_ordered_extent *tmp; | |
62 | ||
63 | ASSERT(inode_is_locked(ctx->inode)); | |
64 | ||
65 | list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) { | |
66 | list_del_init(&ordered->log_list); | |
67 | btrfs_put_ordered_extent(ordered); | |
68 | } | |
8b050d35 MX |
69 | } |
70 | ||
90787766 | 71 | static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans) |
995946dd | 72 | { |
90787766 | 73 | WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid); |
995946dd MX |
74 | } |
75 | ||
4884b8e8 | 76 | static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans) |
995946dd | 77 | { |
4884b8e8 | 78 | return READ_ONCE(trans->fs_info->last_trans_log_full_commit) == |
995946dd MX |
79 | trans->transid; |
80 | } | |
81 | ||
e02119d5 | 82 | int btrfs_sync_log(struct btrfs_trans_handle *trans, |
8b050d35 | 83 | struct btrfs_root *root, struct btrfs_log_ctx *ctx); |
e02119d5 | 84 | int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); |
4a500fd1 YZ |
85 | int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, |
86 | struct btrfs_fs_info *fs_info); | |
e02119d5 CM |
87 | int btrfs_recover_log_trees(struct btrfs_root *tree_root); |
88 | int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, | |
e5b84f7a | 89 | struct dentry *dentry, |
8b050d35 | 90 | struct btrfs_log_ctx *ctx); |
9a35fc95 JB |
91 | void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, |
92 | struct btrfs_root *root, | |
6db75318 | 93 | const struct fscrypt_str *name, |
9a35fc95 JB |
94 | struct btrfs_inode *dir, u64 index); |
95 | void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans, | |
96 | struct btrfs_root *root, | |
6db75318 | 97 | const struct fscrypt_str *name, |
9a35fc95 | 98 | struct btrfs_inode *inode, u64 dirid); |
143bede5 | 99 | void btrfs_end_log_trans(struct btrfs_root *root); |
45128b08 | 100 | void btrfs_pin_log_trans(struct btrfs_root *root); |
12fcfd22 | 101 | void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, |
4176bdbf | 102 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
59fcf388 | 103 | bool for_rename); |
1ec9a1ae | 104 | void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans, |
43663557 | 105 | struct btrfs_inode *dir); |
75b463d2 | 106 | void btrfs_log_new_name(struct btrfs_trans_handle *trans, |
d5f5bd54 | 107 | struct dentry *old_dentry, struct btrfs_inode *old_dir, |
88d2beec | 108 | u64 old_dir_index, struct dentry *parent); |
9888c340 | 109 | |
e02119d5 | 110 | #endif |