2 * Copyright (C) 2007 Oracle. All rights reserved.
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.
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.
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.
19 #ifndef __TRANSACTION__
20 #define __TRANSACTION__
21 #include "btrfs_inode.h"
23 struct btrfs_transaction {
25 unsigned long num_writers;
26 unsigned long num_joined;
30 struct list_head list;
31 struct radix_tree_root dirty_pages;
32 unsigned long start_time;
33 wait_queue_head_t writer_wait;
34 wait_queue_head_t commit_wait;
37 struct btrfs_trans_handle {
39 unsigned long blocks_reserved;
40 unsigned long blocks_used;
41 struct btrfs_transaction *transaction;
42 struct btrfs_block_group_cache *block_group;
43 u64 alloc_exclude_start;
48 static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
51 trans->block_group = BTRFS_I(inode)->block_group;
54 static inline void btrfs_update_inode_block_group(struct
55 btrfs_trans_handle *trans,
58 BTRFS_I(inode)->block_group = trans->block_group;
61 static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
64 BTRFS_I(inode)->last_trans = trans->transaction->transid;
67 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
68 struct btrfs_root *root);
69 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
71 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
72 struct btrfs_root *root);
73 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
74 struct btrfs_root *root);
76 void btrfs_transaction_cleaner(struct work_struct *work);
77 void btrfs_transaction_flush_work(struct btrfs_root *root);
78 void btrfs_transaction_queue_work(struct btrfs_root *root, int delay);
79 void btrfs_init_transaction_sys(void);
80 void btrfs_exit_transaction_sys(void);
81 int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest,
82 struct list_head *dead_list);
83 int btrfs_defrag_dirty_roots(struct btrfs_fs_info *info);
84 int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
85 int btrfs_clean_old_snapshots(struct btrfs_root *root);