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"
22 #include "delayed-ref.h"
24 struct btrfs_transaction {
26 unsigned long num_writers;
27 unsigned long num_joined;
32 struct list_head list;
33 struct extent_io_tree dirty_pages;
34 unsigned long start_time;
35 wait_queue_head_t writer_wait;
36 wait_queue_head_t commit_wait;
37 struct list_head pending_snapshots;
38 struct btrfs_delayed_ref_root delayed_refs;
41 struct btrfs_trans_handle {
43 unsigned long blocks_reserved;
44 unsigned long blocks_used;
45 struct btrfs_transaction *transaction;
47 u64 alloc_exclude_start;
49 unsigned long delayed_ref_updates;
52 struct btrfs_pending_snapshot {
53 struct dentry *dentry;
54 struct btrfs_root *root;
56 struct btrfs_key root_key;
57 struct list_head list;
60 struct btrfs_dirty_root {
61 struct list_head list;
62 struct btrfs_root *root;
63 struct btrfs_root *latest_root;
66 static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
69 trans->block_group = BTRFS_I(inode)->block_group;
72 static inline void btrfs_update_inode_block_group(
73 struct btrfs_trans_handle *trans,
76 BTRFS_I(inode)->block_group = trans->block_group;
79 static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
82 BTRFS_I(inode)->last_trans = trans->transaction->transid;
85 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
86 struct btrfs_root *root);
87 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
89 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
91 struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
93 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
94 struct btrfs_root *root);
95 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
96 struct btrfs_root *root);
98 int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest);
99 int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
100 int btrfs_clean_old_snapshots(struct btrfs_root *root);
101 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
102 struct btrfs_root *root);
103 int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
104 struct btrfs_root *root);
105 void btrfs_throttle(struct btrfs_root *root);
106 int btrfs_record_root_in_trans(struct btrfs_root *root);
107 int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
108 struct extent_io_tree *dirty_pages);