Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 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 | |
Miao Xie | 995946d | 2014-04-02 19:51:06 +0800 | [diff] [blame] | 22 | #include "ctree.h" |
| 23 | #include "transaction.h" |
| 24 | |
Chris Mason | 257c62e | 2009-10-13 13:21:08 -0400 | [diff] [blame] | 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 | |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 28 | struct btrfs_log_ctx { |
| 29 | int log_ret; |
Miao Xie | d1433de | 2014-02-20 18:08:59 +0800 | [diff] [blame] | 30 | int log_transid; |
Filipe Manana | 8407f55 | 2014-09-05 15:14:39 +0100 | [diff] [blame^] | 31 | int io_err; |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 32 | struct list_head list; |
| 33 | }; |
| 34 | |
| 35 | static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx) |
| 36 | { |
| 37 | ctx->log_ret = 0; |
Miao Xie | d1433de | 2014-02-20 18:08:59 +0800 | [diff] [blame] | 38 | ctx->log_transid = 0; |
Filipe Manana | 8407f55 | 2014-09-05 15:14:39 +0100 | [diff] [blame^] | 39 | ctx->io_err = 0; |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 40 | INIT_LIST_HEAD(&ctx->list); |
| 41 | } |
| 42 | |
Miao Xie | 995946d | 2014-04-02 19:51:06 +0800 | [diff] [blame] | 43 | static 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 | |
| 49 | static 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 | |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 56 | int btrfs_sync_log(struct btrfs_trans_handle *trans, |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 57 | struct btrfs_root *root, struct btrfs_log_ctx *ctx); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 58 | int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); |
Yan, Zheng | 4a500fd | 2010-05-16 10:49:59 -0400 | [diff] [blame] | 59 | int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, |
| 60 | struct btrfs_fs_info *fs_info); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 61 | int btrfs_recover_log_trees(struct btrfs_root *tree_root); |
| 62 | int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 63 | struct btrfs_root *root, struct dentry *dentry, |
Filipe Manana | 49dae1b | 2014-09-06 22:34:39 +0100 | [diff] [blame] | 64 | const loff_t start, |
| 65 | const loff_t end, |
Miao Xie | 8b050d3 | 2014-02-20 18:08:58 +0800 | [diff] [blame] | 66 | struct btrfs_log_ctx *ctx); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 67 | int 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); |
| 71 | int 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); |
Jeff Mahoney | 143bede | 2012-03-01 14:56:26 +0100 | [diff] [blame] | 75 | void btrfs_end_log_trans(struct btrfs_root *root); |
Chris Mason | 12fcfd2 | 2009-03-24 10:24:20 -0400 | [diff] [blame] | 76 | int btrfs_pin_log_trans(struct btrfs_root *root); |
Chris Mason | 12fcfd2 | 2009-03-24 10:24:20 -0400 | [diff] [blame] | 77 | void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, |
| 78 | struct inode *dir, struct inode *inode, |
| 79 | int for_rename); |
| 80 | int btrfs_log_new_name(struct btrfs_trans_handle *trans, |
| 81 | struct inode *inode, struct inode *old_dir, |
| 82 | struct dentry *parent); |
Chris Mason | e02119d | 2008-09-05 16:13:11 -0400 | [diff] [blame] | 83 | #endif |