1*4882a593Smuzhiyun /* SPDX-License-Identifier: GPL-2.0 */
2*4882a593Smuzhiyun /*
3*4882a593Smuzhiyun * Copyright (C) 2008 Oracle. All rights reserved.
4*4882a593Smuzhiyun */
5*4882a593Smuzhiyun
6*4882a593Smuzhiyun #ifndef BTRFS_TREE_LOG_H
7*4882a593Smuzhiyun #define BTRFS_TREE_LOG_H
8*4882a593Smuzhiyun
9*4882a593Smuzhiyun #include "ctree.h"
10*4882a593Smuzhiyun #include "transaction.h"
11*4882a593Smuzhiyun
12*4882a593Smuzhiyun /* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
13*4882a593Smuzhiyun #define BTRFS_NO_LOG_SYNC 256
14*4882a593Smuzhiyun
15*4882a593Smuzhiyun struct btrfs_log_ctx {
16*4882a593Smuzhiyun int log_ret;
17*4882a593Smuzhiyun int log_transid;
18*4882a593Smuzhiyun bool log_new_dentries;
19*4882a593Smuzhiyun bool logging_new_name;
20*4882a593Smuzhiyun struct inode *inode;
21*4882a593Smuzhiyun struct list_head list;
22*4882a593Smuzhiyun /* Only used for fast fsyncs. */
23*4882a593Smuzhiyun struct list_head ordered_extents;
24*4882a593Smuzhiyun };
25*4882a593Smuzhiyun
btrfs_init_log_ctx(struct btrfs_log_ctx * ctx,struct inode * inode)26*4882a593Smuzhiyun static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
27*4882a593Smuzhiyun struct inode *inode)
28*4882a593Smuzhiyun {
29*4882a593Smuzhiyun ctx->log_ret = 0;
30*4882a593Smuzhiyun ctx->log_transid = 0;
31*4882a593Smuzhiyun ctx->log_new_dentries = false;
32*4882a593Smuzhiyun ctx->logging_new_name = false;
33*4882a593Smuzhiyun ctx->inode = inode;
34*4882a593Smuzhiyun INIT_LIST_HEAD(&ctx->list);
35*4882a593Smuzhiyun INIT_LIST_HEAD(&ctx->ordered_extents);
36*4882a593Smuzhiyun }
37*4882a593Smuzhiyun
btrfs_release_log_ctx_extents(struct btrfs_log_ctx * ctx)38*4882a593Smuzhiyun static inline void btrfs_release_log_ctx_extents(struct btrfs_log_ctx *ctx)
39*4882a593Smuzhiyun {
40*4882a593Smuzhiyun struct btrfs_ordered_extent *ordered;
41*4882a593Smuzhiyun struct btrfs_ordered_extent *tmp;
42*4882a593Smuzhiyun
43*4882a593Smuzhiyun ASSERT(inode_is_locked(ctx->inode));
44*4882a593Smuzhiyun
45*4882a593Smuzhiyun list_for_each_entry_safe(ordered, tmp, &ctx->ordered_extents, log_list) {
46*4882a593Smuzhiyun list_del_init(&ordered->log_list);
47*4882a593Smuzhiyun btrfs_put_ordered_extent(ordered);
48*4882a593Smuzhiyun }
49*4882a593Smuzhiyun }
50*4882a593Smuzhiyun
btrfs_set_log_full_commit(struct btrfs_trans_handle * trans)51*4882a593Smuzhiyun static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
52*4882a593Smuzhiyun {
53*4882a593Smuzhiyun WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);
54*4882a593Smuzhiyun }
55*4882a593Smuzhiyun
btrfs_need_log_full_commit(struct btrfs_trans_handle * trans)56*4882a593Smuzhiyun static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
57*4882a593Smuzhiyun {
58*4882a593Smuzhiyun return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==
59*4882a593Smuzhiyun trans->transid;
60*4882a593Smuzhiyun }
61*4882a593Smuzhiyun
62*4882a593Smuzhiyun int btrfs_sync_log(struct btrfs_trans_handle *trans,
63*4882a593Smuzhiyun struct btrfs_root *root, struct btrfs_log_ctx *ctx);
64*4882a593Smuzhiyun int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
65*4882a593Smuzhiyun int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
66*4882a593Smuzhiyun struct btrfs_fs_info *fs_info);
67*4882a593Smuzhiyun int btrfs_recover_log_trees(struct btrfs_root *tree_root);
68*4882a593Smuzhiyun int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
69*4882a593Smuzhiyun struct dentry *dentry,
70*4882a593Smuzhiyun struct btrfs_log_ctx *ctx);
71*4882a593Smuzhiyun int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
72*4882a593Smuzhiyun struct btrfs_root *root,
73*4882a593Smuzhiyun const char *name, int name_len,
74*4882a593Smuzhiyun struct btrfs_inode *dir, u64 index);
75*4882a593Smuzhiyun int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
76*4882a593Smuzhiyun struct btrfs_root *root,
77*4882a593Smuzhiyun const char *name, int name_len,
78*4882a593Smuzhiyun struct btrfs_inode *inode, u64 dirid);
79*4882a593Smuzhiyun void btrfs_end_log_trans(struct btrfs_root *root);
80*4882a593Smuzhiyun void btrfs_pin_log_trans(struct btrfs_root *root);
81*4882a593Smuzhiyun void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
82*4882a593Smuzhiyun struct btrfs_inode *dir, struct btrfs_inode *inode,
83*4882a593Smuzhiyun int for_rename);
84*4882a593Smuzhiyun void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
85*4882a593Smuzhiyun struct btrfs_inode *dir);
86*4882a593Smuzhiyun void btrfs_log_new_name(struct btrfs_trans_handle *trans,
87*4882a593Smuzhiyun struct btrfs_inode *inode, struct btrfs_inode *old_dir,
88*4882a593Smuzhiyun struct dentry *parent);
89*4882a593Smuzhiyun
90*4882a593Smuzhiyun #endif
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