Commit | Line | Data |
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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 | |
602035d7 DS |
9 | #include <linux/list.h> |
10 | #include <linux/fs.h> | |
9b569ea0 | 11 | #include "messages.h" |
995946dd MX |
12 | #include "ctree.h" |
13 | #include "transaction.h" | |
14 | ||
602035d7 DS |
15 | struct inode; |
16 | struct dentry; | |
17 | struct btrfs_ordered_extent; | |
18 | struct btrfs_root; | |
19 | struct btrfs_trans_handle; | |
20 | ||
257c62e1 CM |
21 | /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */ |
22 | #define BTRFS_NO_LOG_SYNC 256 | |
23 | ||
5cce1780 FM |
24 | /* |
25 | * We can't use the tree log for whatever reason, force a transaction commit. | |
26 | * We use a negative value because there are functions through the logging code | |
27 | * that need to return an error (< 0 value), false (0) or true (1). Any negative | |
28 | * value will do, as it will cause the log to be marked for a full sync. | |
29 | */ | |
30 | #define BTRFS_LOG_FORCE_COMMIT (-(MAX_ERRNO + 1)) | |
f31f09f6 | 31 | |
8b050d35 MX |
32 | struct btrfs_log_ctx { |
33 | int log_ret; | |
d1433deb | 34 | int log_transid; |
2f2ff0ee | 35 | bool log_new_dentries; |
75b463d2 | 36 | bool logging_new_name; |
30b80f3c | 37 | bool logging_new_delayed_dentries; |
0f8ce498 FM |
38 | /* Indicate if the inode being logged was logged before. */ |
39 | bool logged_before; | |
4d0120a5 | 40 | struct btrfs_inode *inode; |
8b050d35 | 41 | struct list_head list; |
48778179 FM |
42 | /* Only used for fast fsyncs. */ |
43 | struct list_head ordered_extents; | |
e09d94c9 FM |
44 | struct list_head conflict_inodes; |
45 | int num_conflict_inodes; | |
46 | bool logging_conflict_inodes; | |
e383e158 FM |
47 | /* |
48 | * Used for fsyncs that need to copy items from the subvolume tree to | |
49 | * the log tree (full sync flag set or copy everything flag set) to | |
50 | * avoid allocating a temporary extent buffer while holding a lock on | |
51 | * an extent buffer of the subvolume tree and under the log transaction. | |
52 | * Also helps to avoid allocating and freeing a temporary extent buffer | |
53 | * in case we need to process multiple leaves from the subvolume tree. | |
54 | */ | |
55 | struct extent_buffer *scratch_eb; | |
8b050d35 MX |
56 | }; |
57 | ||
4d0120a5 | 58 | void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx, struct btrfs_inode *inode); |
c207adc1 DS |
59 | void btrfs_init_log_ctx_scratch_eb(struct btrfs_log_ctx *ctx); |
60 | void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx); | |
8b050d35 | 61 | |
90787766 | 62 | static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans) |
995946dd | 63 | { |
90787766 | 64 | WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid); |
995946dd MX |
65 | } |
66 | ||
4884b8e8 | 67 | static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans) |
995946dd | 68 | { |
4884b8e8 | 69 | return READ_ONCE(trans->fs_info->last_trans_log_full_commit) == |
995946dd MX |
70 | trans->transid; |
71 | } | |
72 | ||
e02119d5 | 73 | int btrfs_sync_log(struct btrfs_trans_handle *trans, |
8b050d35 | 74 | struct btrfs_root *root, struct btrfs_log_ctx *ctx); |
e02119d5 | 75 | int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); |
4a500fd1 YZ |
76 | int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, |
77 | struct btrfs_fs_info *fs_info); | |
e02119d5 CM |
78 | int btrfs_recover_log_trees(struct btrfs_root *tree_root); |
79 | int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, | |
e5b84f7a | 80 | struct dentry *dentry, |
8b050d35 | 81 | struct btrfs_log_ctx *ctx); |
9a35fc95 JB |
82 | void btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans, |
83 | struct btrfs_root *root, | |
6db75318 | 84 | const struct fscrypt_str *name, |
9a35fc95 JB |
85 | struct btrfs_inode *dir, u64 index); |
86 | void btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans, | |
87 | struct btrfs_root *root, | |
6db75318 | 88 | const struct fscrypt_str *name, |
9a35fc95 | 89 | struct btrfs_inode *inode, u64 dirid); |
143bede5 | 90 | void btrfs_end_log_trans(struct btrfs_root *root); |
45128b08 | 91 | void btrfs_pin_log_trans(struct btrfs_root *root); |
12fcfd22 | 92 | void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, |
4176bdbf | 93 | struct btrfs_inode *dir, struct btrfs_inode *inode, |
59fcf388 | 94 | bool for_rename); |
1ec9a1ae | 95 | void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans, |
43663557 | 96 | struct btrfs_inode *dir); |
45c4102f FM |
97 | void btrfs_record_new_subvolume(const struct btrfs_trans_handle *trans, |
98 | struct btrfs_inode *dir); | |
75b463d2 | 99 | void btrfs_log_new_name(struct btrfs_trans_handle *trans, |
d5f5bd54 | 100 | struct dentry *old_dentry, struct btrfs_inode *old_dir, |
88d2beec | 101 | u64 old_dir_index, struct dentry *parent); |
9888c340 | 102 | |
e02119d5 | 103 | #endif |