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 __BTRFS_TRANSACTION__
20 #define __BTRFS_TRANSACTION__
21 #include "btrfs_inode.h"
23 struct btrfs_transaction {
25 unsigned long num_writers;
26 unsigned long num_joined;
31 struct list_head list;
32 struct extent_io_tree dirty_pages;
33 unsigned long start_time;
34 wait_queue_head_t writer_wait;
35 wait_queue_head_t commit_wait;
36 struct list_head pending_snapshots;
39 struct btrfs_trans_handle {
41 unsigned long blocks_reserved;
42 unsigned long blocks_used;
43 struct btrfs_transaction *transaction;
45 u64 alloc_exclude_start;
49 struct btrfs_pending_snapshot {
50 struct dentry *dentry;
51 struct btrfs_root *root;
53 struct btrfs_key root_key;
54 struct list_head list;
57 struct btrfs_dirty_root {
58 struct list_head list;
59 struct btrfs_root *root;
60 struct btrfs_root *latest_root;
63 static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
66 trans->block_group = BTRFS_I(inode)->block_group;
69 static inline void btrfs_update_inode_block_group(
70 struct btrfs_trans_handle *trans,
73 BTRFS_I(inode)->block_group = trans->block_group;
76 static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
79 BTRFS_I(inode)->last_trans = trans->transaction->transid;
82 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
83 struct btrfs_root *root);
84 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
86 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
88 struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
90 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
91 struct btrfs_root *root);
92 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
93 struct btrfs_root *root);
95 int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest);
96 int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
97 int btrfs_clean_old_snapshots(struct btrfs_root *root);
98 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
99 struct btrfs_root *root);
100 int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
101 struct btrfs_root *root);
102 void btrfs_throttle(struct btrfs_root *root);
103 int btrfs_record_root_in_trans(struct btrfs_root *root);
104 int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
105 struct extent_io_tree *dirty_pages);