Loading...
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
15struct btrfs_log_ctx {
16 int log_ret;
17 int log_transid;
18 bool log_new_dentries;
19 struct inode *inode;
20 struct list_head list;
21};
22
23static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
24 struct inode *inode)
25{
26 ctx->log_ret = 0;
27 ctx->log_transid = 0;
28 ctx->log_new_dentries = false;
29 ctx->inode = inode;
30 INIT_LIST_HEAD(&ctx->list);
31}
32
33static inline void btrfs_set_log_full_commit(struct btrfs_trans_handle *trans)
34{
35 WRITE_ONCE(trans->fs_info->last_trans_log_full_commit, trans->transid);
36}
37
38static inline int btrfs_need_log_full_commit(struct btrfs_trans_handle *trans)
39{
40 return READ_ONCE(trans->fs_info->last_trans_log_full_commit) ==
41 trans->transid;
42}
43
44int btrfs_sync_log(struct btrfs_trans_handle *trans,
45 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
46int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
47int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
48 struct btrfs_fs_info *fs_info);
49int btrfs_recover_log_trees(struct btrfs_root *tree_root);
50int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
51 struct dentry *dentry,
52 const loff_t start,
53 const loff_t end,
54 struct btrfs_log_ctx *ctx);
55int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
56 struct btrfs_root *root,
57 const char *name, int name_len,
58 struct btrfs_inode *dir, u64 index);
59int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
60 struct btrfs_root *root,
61 const char *name, int name_len,
62 struct btrfs_inode *inode, u64 dirid);
63void btrfs_end_log_trans(struct btrfs_root *root);
64void btrfs_pin_log_trans(struct btrfs_root *root);
65void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
66 struct btrfs_inode *dir, struct btrfs_inode *inode,
67 int for_rename);
68void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
69 struct btrfs_inode *dir);
70/* Return values for btrfs_log_new_name() */
71enum {
72 BTRFS_DONT_NEED_TRANS_COMMIT,
73 BTRFS_NEED_TRANS_COMMIT,
74 BTRFS_DONT_NEED_LOG_SYNC,
75 BTRFS_NEED_LOG_SYNC,
76};
77int btrfs_log_new_name(struct btrfs_trans_handle *trans,
78 struct btrfs_inode *inode, struct btrfs_inode *old_dir,
79 struct dentry *parent,
80 bool sync_log, struct btrfs_log_ctx *ctx);
81
82#endif
1/*
2 * Copyright (C) 2008 Oracle. All rights reserved.
3 *
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
7 *
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
12 *
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
17 */
18
19#ifndef __TREE_LOG_
20#define __TREE_LOG_
21
22#include "ctree.h"
23#include "transaction.h"
24
25/* return value for btrfs_log_dentry_safe that means we don't need to log it at all */
26#define BTRFS_NO_LOG_SYNC 256
27
28struct btrfs_log_ctx {
29 int log_ret;
30 int log_transid;
31 int io_err;
32 bool log_new_dentries;
33 struct inode *inode;
34 struct list_head list;
35};
36
37static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx,
38 struct inode *inode)
39{
40 ctx->log_ret = 0;
41 ctx->log_transid = 0;
42 ctx->io_err = 0;
43 ctx->log_new_dentries = false;
44 ctx->inode = inode;
45 INIT_LIST_HEAD(&ctx->list);
46}
47
48static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
49 struct btrfs_trans_handle *trans)
50{
51 ACCESS_ONCE(fs_info->last_trans_log_full_commit) = trans->transid;
52}
53
54static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
55 struct btrfs_trans_handle *trans)
56{
57 return ACCESS_ONCE(fs_info->last_trans_log_full_commit) ==
58 trans->transid;
59}
60
61int btrfs_sync_log(struct btrfs_trans_handle *trans,
62 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
63int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
64int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
65 struct btrfs_fs_info *fs_info);
66int btrfs_recover_log_trees(struct btrfs_root *tree_root);
67int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
68 struct btrfs_root *root, struct dentry *dentry,
69 const loff_t start,
70 const loff_t end,
71 struct btrfs_log_ctx *ctx);
72int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
73 struct btrfs_root *root,
74 const char *name, int name_len,
75 struct inode *dir, u64 index);
76int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
77 struct btrfs_root *root,
78 const char *name, int name_len,
79 struct inode *inode, u64 dirid);
80void btrfs_end_log_trans(struct btrfs_root *root);
81int btrfs_pin_log_trans(struct btrfs_root *root);
82void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
83 struct inode *dir, struct inode *inode,
84 int for_rename);
85void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
86 struct inode *dir);
87int btrfs_log_new_name(struct btrfs_trans_handle *trans,
88 struct inode *inode, struct inode *old_dir,
89 struct dentry *parent);
90#endif