tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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linux
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 struct list_head list;
33};
34
35static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx)
36{
37 ctx->log_ret = 0;
38 ctx->log_transid = 0;
39 ctx->io_err = 0;
40 INIT_LIST_HEAD(&ctx->list);
41}
42
43static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
44 struct btrfs_trans_handle *trans)
45{
46 ACCESS_ONCE(fs_info->last_trans_log_full_commit) = trans->transid;
47}
48
49static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
50 struct btrfs_trans_handle *trans)
51{
52 return ACCESS_ONCE(fs_info->last_trans_log_full_commit) ==
53 trans->transid;
54}
55
56int btrfs_sync_log(struct btrfs_trans_handle *trans,
57 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
58int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
59int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
60 struct btrfs_fs_info *fs_info);
61int btrfs_recover_log_trees(struct btrfs_root *tree_root);
62int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
63 struct btrfs_root *root, struct dentry *dentry,
64 const loff_t start,
65 const loff_t end,
66 struct btrfs_log_ctx *ctx);
67int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
68 struct btrfs_root *root,
69 const char *name, int name_len,
70 struct inode *dir, u64 index);
71int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
72 struct btrfs_root *root,
73 const char *name, int name_len,
74 struct inode *inode, u64 dirid);
75void btrfs_end_log_trans(struct btrfs_root *root);
76int btrfs_pin_log_trans(struct btrfs_root *root);
77void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
78 struct inode *dir, struct inode *inode,
79 int for_rename);
80int btrfs_log_new_name(struct btrfs_trans_handle *trans,
81 struct inode *inode, struct inode *old_dir,
82 struct dentry *parent);
83#endif