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Chris Masone02119d2008-09-05 16:13:11 -04001/*
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
Miao Xie995946d2014-04-02 19:51:06 +080022#include "ctree.h"
23#include "transaction.h"
24
Chris Mason257c62e2009-10-13 13:21:08 -040025/* 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
Miao Xie8b050d32014-02-20 18:08:58 +080028struct btrfs_log_ctx {
29 int log_ret;
Miao Xied1433de2014-02-20 18:08:59 +080030 int log_transid;
Filipe Manana8407f552014-09-05 15:14:39 +010031 int io_err;
Filipe Manana2f2ff0e2015-03-20 17:19:46 +000032 bool log_new_dentries;
Miao Xie8b050d32014-02-20 18:08:58 +080033 struct list_head list;
34};
35
36static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx)
37{
38 ctx->log_ret = 0;
Miao Xied1433de2014-02-20 18:08:59 +080039 ctx->log_transid = 0;
Filipe Manana8407f552014-09-05 15:14:39 +010040 ctx->io_err = 0;
Filipe Manana2f2ff0e2015-03-20 17:19:46 +000041 ctx->log_new_dentries = false;
Miao Xie8b050d32014-02-20 18:08:58 +080042 INIT_LIST_HEAD(&ctx->list);
43}
44
Miao Xie995946d2014-04-02 19:51:06 +080045static inline void btrfs_set_log_full_commit(struct btrfs_fs_info *fs_info,
46 struct btrfs_trans_handle *trans)
47{
48 ACCESS_ONCE(fs_info->last_trans_log_full_commit) = trans->transid;
49}
50
51static inline int btrfs_need_log_full_commit(struct btrfs_fs_info *fs_info,
52 struct btrfs_trans_handle *trans)
53{
54 return ACCESS_ONCE(fs_info->last_trans_log_full_commit) ==
55 trans->transid;
56}
57
Chris Masone02119d2008-09-05 16:13:11 -040058int btrfs_sync_log(struct btrfs_trans_handle *trans,
Miao Xie8b050d32014-02-20 18:08:58 +080059 struct btrfs_root *root, struct btrfs_log_ctx *ctx);
Chris Masone02119d2008-09-05 16:13:11 -040060int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root);
Yan, Zheng4a500fd2010-05-16 10:49:59 -040061int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans,
62 struct btrfs_fs_info *fs_info);
Chris Masone02119d2008-09-05 16:13:11 -040063int btrfs_recover_log_trees(struct btrfs_root *tree_root);
64int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans,
Miao Xie8b050d32014-02-20 18:08:58 +080065 struct btrfs_root *root, struct dentry *dentry,
Filipe Manana49dae1b2014-09-06 22:34:39 +010066 const loff_t start,
67 const loff_t end,
Miao Xie8b050d32014-02-20 18:08:58 +080068 struct btrfs_log_ctx *ctx);
Chris Masone02119d2008-09-05 16:13:11 -040069int btrfs_del_dir_entries_in_log(struct btrfs_trans_handle *trans,
70 struct btrfs_root *root,
71 const char *name, int name_len,
72 struct inode *dir, u64 index);
73int btrfs_del_inode_ref_in_log(struct btrfs_trans_handle *trans,
74 struct btrfs_root *root,
75 const char *name, int name_len,
76 struct inode *inode, u64 dirid);
Jeff Mahoney143bede2012-03-01 14:56:26 +010077void btrfs_end_log_trans(struct btrfs_root *root);
Chris Mason12fcfd22009-03-24 10:24:20 -040078int btrfs_pin_log_trans(struct btrfs_root *root);
Chris Mason12fcfd22009-03-24 10:24:20 -040079void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans,
80 struct inode *dir, struct inode *inode,
81 int for_rename);
Filipe Manana1ec9a1a2016-02-10 10:42:25 +000082void btrfs_record_snapshot_destroy(struct btrfs_trans_handle *trans,
83 struct inode *dir);
Chris Mason12fcfd22009-03-24 10:24:20 -040084int btrfs_log_new_name(struct btrfs_trans_handle *trans,
85 struct inode *inode, struct inode *old_dir,
86 struct dentry *parent);
Chris Masone02119d2008-09-05 16:13:11 -040087#endif