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;
44 struct btrfs_block_group_cache *block_group;
45 u64 alloc_exclude_start;
49 struct btrfs_pending_snapshot {
50 struct btrfs_root *root;
52 struct list_head list;
56 static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
59 trans->block_group = BTRFS_I(inode)->block_group;
62 static inline void btrfs_update_inode_block_group(struct
63 btrfs_trans_handle *trans,
66 BTRFS_I(inode)->block_group = trans->block_group;
69 static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
72 BTRFS_I(inode)->last_trans = trans->transaction->transid;
75 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
76 struct btrfs_root *root);
77 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
79 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
81 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
82 struct btrfs_root *root);
83 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
84 struct btrfs_root *root);
86 int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest,
87 struct list_head *dead_list);
88 int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
89 int btrfs_clean_old_snapshots(struct btrfs_root *root);
90 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
91 struct btrfs_root *root);
92 int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
93 struct btrfs_root *root);