blob: 598baa312417a9943eff627e5a376d846a9c9ad7 [file] [log] [blame]
Chris Mason6cbd5572007-06-12 09:07:21 -04001/*
2 * Copyright (C) 2007 Oracle. All rights reserved.
3 *
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.
7 *
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.
12 *
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.
17 */
18
Chris Masondc17ff82008-01-08 15:46:30 -050019#ifndef __BTRFS_TRANSACTION__
20#define __BTRFS_TRANSACTION__
Chris Mason31f3c992007-04-30 15:25:45 -040021#include "btrfs_inode.h"
Chris Masone089f052007-03-16 16:20:31 -040022
Chris Mason79154b12007-03-22 15:59:16 -040023struct btrfs_transaction {
24 u64 transid;
25 unsigned long num_writers;
Josef Bacik15ee9bc2007-08-10 16:22:09 -040026 unsigned long num_joined;
Chris Mason79154b12007-03-22 15:59:16 -040027 int in_commit;
28 int use_count;
29 int commit_done;
Chris Masonf9295742008-07-17 12:54:14 -040030 int blocked;
Chris Mason8fd17792007-04-19 21:01:03 -040031 struct list_head list;
Chris Masond1310b22008-01-24 16:13:08 -050032 struct extent_io_tree dirty_pages;
Chris Mason08607c12007-06-08 15:33:54 -040033 unsigned long start_time;
Chris Mason79154b12007-03-22 15:59:16 -040034 wait_queue_head_t writer_wait;
35 wait_queue_head_t commit_wait;
Chris Mason3063d292008-01-08 15:46:30 -050036 struct list_head pending_snapshots;
Chris Mason79154b12007-03-22 15:59:16 -040037};
38
Chris Masone089f052007-03-16 16:20:31 -040039struct btrfs_trans_handle {
40 u64 transid;
41 unsigned long blocks_reserved;
42 unsigned long blocks_used;
Chris Mason79154b12007-03-22 15:59:16 -040043 struct btrfs_transaction *transaction;
Chris Mason31f3c992007-04-30 15:25:45 -040044 struct btrfs_block_group_cache *block_group;
Chris Mason26b80032007-08-08 20:17:12 -040045 u64 alloc_exclude_start;
46 u64 alloc_exclude_nr;
Chris Masone089f052007-03-16 16:20:31 -040047};
48
Chris Mason3063d292008-01-08 15:46:30 -050049struct btrfs_pending_snapshot {
50 struct btrfs_root *root;
51 char *name;
52 struct list_head list;
53};
54
Yan Zhengf321e492008-07-30 09:26:11 -040055struct btrfs_dirty_root {
56 struct list_head list;
57 struct btrfs_root *root;
58 struct btrfs_root *latest_root;
59};
Chris Masone089f052007-03-16 16:20:31 -040060
Chris Mason31f3c992007-04-30 15:25:45 -040061static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
62 struct inode *inode)
63{
64 trans->block_group = BTRFS_I(inode)->block_group;
65}
66
67static inline void btrfs_update_inode_block_group(struct
68 btrfs_trans_handle *trans,
69 struct inode *inode)
70{
71 BTRFS_I(inode)->block_group = trans->block_group;
72}
73
Josef Bacik15ee9bc2007-08-10 16:22:09 -040074static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
75 struct inode *inode)
76{
77 BTRFS_I(inode)->last_trans = trans->transaction->transid;
78}
79
Chris Mason79154b12007-03-22 15:59:16 -040080int btrfs_end_transaction(struct btrfs_trans_handle *trans,
81 struct btrfs_root *root);
82struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
83 int num_blocks);
Chris Masonf9295742008-07-17 12:54:14 -040084struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
85 int num_blocks);
Sage Weil9ca9ee02008-08-04 10:41:27 -040086struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
87 int num_blocks);
Chris Mason79154b12007-03-22 15:59:16 -040088int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
89 struct btrfs_root *root);
90int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
91 struct btrfs_root *root);
Chris Mason08607c12007-06-08 15:33:54 -040092
Yan Zhengb48652c2008-08-04 23:23:47 -040093int btrfs_add_dead_root(struct btrfs_root *root, struct btrfs_root *latest);
Chris Masone9d0b132007-08-10 14:06:19 -040094int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
95int btrfs_clean_old_snapshots(struct btrfs_root *root);
Chris Mason5f39d392007-10-15 16:14:19 -040096int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
97 struct btrfs_root *root);
Chris Mason89ce8a62008-06-25 16:01:31 -040098int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
99 struct btrfs_root *root);
Chris Masonab78c842008-07-29 16:15:18 -0400100void btrfs_throttle(struct btrfs_root *root);
Chris Masone089f052007-03-16 16:20:31 -0400101#endif