blob: 93c7ccb33118f38d420c00c3b790fe0040b7f0ca [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 Mason56bec292009-03-13 10:10:06 -040022#include "delayed-ref.h"
Chris Masone089f052007-03-16 16:20:31 -040023
Chris Mason79154b12007-03-22 15:59:16 -040024struct btrfs_transaction {
25 u64 transid;
Chris Masonb7ec40d2009-03-12 20:12:45 -040026 /*
27 * total writers in this transaction, it must be zero before the
28 * transaction can end
29 */
Chris Mason79154b12007-03-22 15:59:16 -040030 unsigned long num_writers;
Chris Masonb7ec40d2009-03-12 20:12:45 -040031
Josef Bacik15ee9bc2007-08-10 16:22:09 -040032 unsigned long num_joined;
Chris Mason79154b12007-03-22 15:59:16 -040033 int in_commit;
34 int use_count;
35 int commit_done;
Chris Masonf9295742008-07-17 12:54:14 -040036 int blocked;
Chris Mason8fd17792007-04-19 21:01:03 -040037 struct list_head list;
Chris Masond1310b22008-01-24 16:13:08 -050038 struct extent_io_tree dirty_pages;
Chris Mason08607c12007-06-08 15:33:54 -040039 unsigned long start_time;
Chris Mason79154b12007-03-22 15:59:16 -040040 wait_queue_head_t writer_wait;
41 wait_queue_head_t commit_wait;
Chris Mason3063d292008-01-08 15:46:30 -050042 struct list_head pending_snapshots;
Chris Mason56bec292009-03-13 10:10:06 -040043 struct btrfs_delayed_ref_root delayed_refs;
Chris Mason79154b12007-03-22 15:59:16 -040044};
45
Chris Masone089f052007-03-16 16:20:31 -040046struct btrfs_trans_handle {
47 u64 transid;
48 unsigned long blocks_reserved;
49 unsigned long blocks_used;
Chris Mason79154b12007-03-22 15:59:16 -040050 struct btrfs_transaction *transaction;
Yan Zhengd2fb3432008-12-11 16:30:39 -050051 u64 block_group;
Chris Mason26b80032007-08-08 20:17:12 -040052 u64 alloc_exclude_start;
53 u64 alloc_exclude_nr;
Chris Mason56bec292009-03-13 10:10:06 -040054 unsigned long delayed_ref_updates;
Chris Masone089f052007-03-16 16:20:31 -040055};
56
Chris Mason3063d292008-01-08 15:46:30 -050057struct btrfs_pending_snapshot {
Chris Mason3de45862008-11-17 21:02:50 -050058 struct dentry *dentry;
Chris Mason3063d292008-01-08 15:46:30 -050059 struct btrfs_root *root;
60 char *name;
Chris Mason3de45862008-11-17 21:02:50 -050061 struct btrfs_key root_key;
Chris Mason3063d292008-01-08 15:46:30 -050062 struct list_head list;
63};
64
Chris Mason31f3c992007-04-30 15:25:45 -040065static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans,
66 struct inode *inode)
67{
68 trans->block_group = BTRFS_I(inode)->block_group;
69}
70
Chris Masond3977122009-01-05 21:25:51 -050071static inline void btrfs_update_inode_block_group(
72 struct btrfs_trans_handle *trans,
73 struct inode *inode)
Chris Mason31f3c992007-04-30 15:25:45 -040074{
75 BTRFS_I(inode)->block_group = trans->block_group;
76}
77
Josef Bacik15ee9bc2007-08-10 16:22:09 -040078static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans,
79 struct inode *inode)
80{
81 BTRFS_I(inode)->last_trans = trans->transaction->transid;
Chris Mason257c62e2009-10-13 13:21:08 -040082 BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid;
Josef Bacik15ee9bc2007-08-10 16:22:09 -040083}
84
Chris Mason79154b12007-03-22 15:59:16 -040085int btrfs_end_transaction(struct btrfs_trans_handle *trans,
86 struct btrfs_root *root);
87struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
88 int num_blocks);
Chris Masonf9295742008-07-17 12:54:14 -040089struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root,
90 int num_blocks);
Sage Weil9ca9ee02008-08-04 10:41:27 -040091struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r,
92 int num_blocks);
Chris Mason79154b12007-03-22 15:59:16 -040093int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
94 struct btrfs_root *root);
95int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans,
96 struct btrfs_root *root);
Chris Mason08607c12007-06-08 15:33:54 -040097
Yan Zheng5d4f98a2009-06-10 10:45:14 -040098int btrfs_add_dead_root(struct btrfs_root *root);
99int btrfs_drop_dead_root(struct btrfs_root *root);
Chris Masone9d0b132007-08-10 14:06:19 -0400100int btrfs_defrag_root(struct btrfs_root *root, int cacheonly);
101int btrfs_clean_old_snapshots(struct btrfs_root *root);
Chris Mason5f39d392007-10-15 16:14:19 -0400102int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
103 struct btrfs_root *root);
Chris Mason89ce8a62008-06-25 16:01:31 -0400104int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
105 struct btrfs_root *root);
Chris Masonab78c842008-07-29 16:15:18 -0400106void btrfs_throttle(struct btrfs_root *root);
Yan Zheng5d4f98a2009-06-10 10:45:14 -0400107int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
108 struct btrfs_root *root);
Chris Masond0c803c2008-09-11 16:17:57 -0400109int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
Yan, Zheng8cef4e12009-11-12 09:33:26 +0000110 struct extent_io_tree *dirty_pages, int mark);
Chris Mason690587d2009-10-13 13:29:19 -0400111int btrfs_write_marked_extents(struct btrfs_root *root,
Yan, Zheng8cef4e12009-11-12 09:33:26 +0000112 struct extent_io_tree *dirty_pages, int mark);
Chris Mason690587d2009-10-13 13:29:19 -0400113int btrfs_wait_marked_extents(struct btrfs_root *root,
Yan, Zheng8cef4e12009-11-12 09:33:26 +0000114 struct extent_io_tree *dirty_pages, int mark);
Chris Masonf36f3042009-07-30 10:04:48 -0400115int btrfs_transaction_in_commit(struct btrfs_fs_info *info);
Chris Masone089f052007-03-16 16:20:31 -0400116#endif