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 {
27 * total writers in this transaction, it must be zero before the
30 unsigned long num_writers;
32 unsigned long num_joined;
37 struct list_head list;
38 struct extent_io_tree dirty_pages;
39 unsigned long start_time;
40 wait_queue_head_t writer_wait;
41 wait_queue_head_t commit_wait;
42 struct list_head pending_snapshots;
43 struct btrfs_delayed_ref_root delayed_refs;
46 struct btrfs_trans_handle {
48 unsigned long blocks_reserved;
49 unsigned long blocks_used;
50 struct btrfs_transaction *transaction;
52 u64 alloc_exclude_start;
54 unsigned long delayed_ref_updates;
57 struct btrfs_pending_snapshot {
58 struct dentry *dentry;
59 struct btrfs_root *root;
61 struct btrfs_key root_key;
62 struct list_head list;
65 struct btrfs_dirty_root {
66 struct list_head list;
67 struct btrfs_root *root;
68 struct btrfs_root *latest_root;
71 static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
74 trans->block_group = BTRFS_I(inode)->block_group;
77 static inline void btrfs_update_inode_block_group(
78 struct btrfs_trans_handle *trans,
81 BTRFS_I(inode)->block_group = trans->block_group;
84 static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
87 BTRFS_I(inode)->last_trans = trans->transaction->transid;
90 int btrfs_end_transaction(struct btrfs_trans_handle *trans,
91 struct btrfs_root *root);
92 struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
94 struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
96 struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
98 int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
99 struct btrfs_root *root);
100 int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
101 struct btrfs_root *root);
103 int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest);
104 int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
105 int btrfs_clean_old_snapshots(struct btrfs_root *root);
106 int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
107 struct btrfs_root *root);
108 int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
109 struct btrfs_root *root);
110 void btrfs_throttle(struct btrfs_root *root);
111 int btrfs_record_root_in_trans(struct btrfs_root *root);
112 int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
113 struct extent_io_tree *dirty_pages);