projects / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| e02119d5 CM |
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 | ||
| 995946dd MX |
22 | #include "ctree.h" |
| 23 | #include "transaction.h" | |
| 24 | ||
| 257c62e1 CM |
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 | ||
| 8b050d35 MX |
28 | struct btrfs_log_ctx { |
| 29 | int log_ret; | |
| d1433deb | 30 | int log_transid; |
| 8407f553 | 31 | int io_err; |
| 2f2ff0ee | 32 | bool log_new_dentries; |
| 8b050d35 MX |
33 | struct list_head list; |
| 34 | }; | |
| 35 | ||
| 36 | static inline void btrfs_init_log_ctx(struct btrfs_log_ctx *ctx) | |
| 37 | { | |
| 38 | ctx->log_ret = 0; | |
| d1433deb | 39 | ctx->log_transid = 0; |
| 8407f553 | 40 | ctx->io_err = 0; |
| 2f2ff0ee | 41 | ctx->log_new_dentries = false; |
| 8b050d35 MX |
42 | INIT_LIST_HEAD(&ctx->list); |
| 43 | } | |
| 44 | ||
| 995946dd MX |
45 | static 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 | ||
| 51 | static 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 | ||
| e02119d5 | 58 | int btrfs_sync_log(struct btrfs_trans_handle *trans, |
| 8b050d35 | 59 | struct btrfs_root *root, struct btrfs_log_ctx *ctx); |
| e02119d5 | 60 | int btrfs_free_log(struct btrfs_trans_handle *trans, struct btrfs_root *root); |
| 4a500fd1 YZ |
61 | int btrfs_free_log_root_tree(struct btrfs_trans_handle *trans, |
| 62 | struct btrfs_fs_info *fs_info); | |
| e02119d5 CM |
63 | int btrfs_recover_log_trees(struct btrfs_root *tree_root); |
| 64 | int btrfs_log_dentry_safe(struct btrfs_trans_handle *trans, | |
| 8b050d35 | 65 | struct btrfs_root *root, struct dentry *dentry, |
| 49dae1bc FM |
66 | const loff_t start, |
| 67 | const loff_t end, | |
| 8b050d35 | 68 | struct btrfs_log_ctx *ctx); |
| e02119d5 CM |
69 | int 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); | |
| 73 | int 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); | |
| 143bede5 | 77 | void btrfs_end_log_trans(struct btrfs_root *root); |
| 12fcfd22 | 78 | int btrfs_pin_log_trans(struct btrfs_root *root); |
| 12fcfd22 CM |
79 | void btrfs_record_unlink_dir(struct btrfs_trans_handle *trans, |
| 80 | struct inode *dir, struct inode *inode, | |
| 81 | int for_rename); | |
| 82 | int btrfs_log_new_name(struct btrfs_trans_handle *trans, | |
| 83 | struct inode *inode, struct inode *old_dir, | |
| 84 | struct dentry *parent); | |
| e02119d5 | 85 | #endif |