Chris Mason | 6cbd557 | 2007-06-12 09:07:21 -0400 | [diff] [blame] | 1 | /* |
| 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 Mason | dc17ff8 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 19 | #ifndef __BTRFS_TRANSACTION__ |
| 20 | #define __BTRFS_TRANSACTION__ |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 21 | #include "btrfs_inode.h" |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 22 | #include "delayed-ref.h" |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 23 | |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 24 | struct btrfs_transaction { |
| 25 | u64 transid; |
Chris Mason | b7ec40d | 2009-03-12 20:12:45 -0400 | [diff] [blame] | 26 | /* |
| 27 | * total writers in this transaction, it must be zero before the |
| 28 | * transaction can end |
| 29 | */ |
Josef Bacik | 13c5a93 | 2011-04-11 15:45:29 -0400 | [diff] [blame] | 30 | atomic_t num_writers; |
Chris Mason | b7ec40d | 2009-03-12 20:12:45 -0400 | [diff] [blame] | 31 | |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 32 | unsigned long num_joined; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 33 | int in_commit; |
Josef Bacik | 13c5a93 | 2011-04-11 15:45:29 -0400 | [diff] [blame] | 34 | atomic_t use_count; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 35 | int commit_done; |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 36 | int blocked; |
Chris Mason | 8fd1779 | 2007-04-19 21:01:03 -0400 | [diff] [blame] | 37 | struct list_head list; |
Chris Mason | d1310b2 | 2008-01-24 16:13:08 -0500 | [diff] [blame] | 38 | struct extent_io_tree dirty_pages; |
Chris Mason | 08607c1 | 2007-06-08 15:33:54 -0400 | [diff] [blame] | 39 | unsigned long start_time; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 40 | wait_queue_head_t writer_wait; |
| 41 | wait_queue_head_t commit_wait; |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 42 | struct list_head pending_snapshots; |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 43 | struct btrfs_delayed_ref_root delayed_refs; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 44 | }; |
| 45 | |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 46 | struct btrfs_trans_handle { |
| 47 | u64 transid; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 48 | u64 block_group; |
| 49 | u64 bytes_reserved; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 50 | unsigned long blocks_reserved; |
| 51 | unsigned long blocks_used; |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 52 | unsigned long delayed_ref_updates; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 53 | struct btrfs_transaction *transaction; |
| 54 | struct btrfs_block_rsv *block_rsv; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 55 | }; |
| 56 | |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 57 | struct btrfs_pending_snapshot { |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 58 | struct dentry *dentry; |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 59 | struct btrfs_root *root; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 60 | struct btrfs_root *snap; |
| 61 | /* block reservation for the operation */ |
| 62 | struct btrfs_block_rsv block_rsv; |
| 63 | /* extra metadata reseration for relocation */ |
| 64 | int error; |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 65 | bool readonly; |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 66 | struct list_head list; |
| 67 | }; |
| 68 | |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 69 | static inline void btrfs_set_trans_block_group(struct btrfs_trans_handle *trans, |
| 70 | struct inode *inode) |
| 71 | { |
| 72 | trans->block_group = BTRFS_I(inode)->block_group; |
| 73 | } |
| 74 | |
Chris Mason | d397712 | 2009-01-05 21:25:51 -0500 | [diff] [blame] | 75 | static inline void btrfs_update_inode_block_group( |
| 76 | struct btrfs_trans_handle *trans, |
| 77 | struct inode *inode) |
Chris Mason | 31f3c99 | 2007-04-30 15:25:45 -0400 | [diff] [blame] | 78 | { |
| 79 | BTRFS_I(inode)->block_group = trans->block_group; |
| 80 | } |
| 81 | |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 82 | static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans, |
| 83 | struct inode *inode) |
| 84 | { |
| 85 | BTRFS_I(inode)->last_trans = trans->transaction->transid; |
Chris Mason | 257c62e | 2009-10-13 13:21:08 -0400 | [diff] [blame] | 86 | BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid; |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 87 | } |
| 88 | |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 89 | int btrfs_end_transaction(struct btrfs_trans_handle *trans, |
| 90 | struct btrfs_root *root); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 91 | int btrfs_end_transaction_nolock(struct btrfs_trans_handle *trans, |
| 92 | struct btrfs_root *root); |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 93 | struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root, |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 94 | int num_items); |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 95 | struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root, |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 96 | int num_blocks); |
Josef Bacik | 0af3d00 | 2010-06-21 14:48:16 -0400 | [diff] [blame] | 97 | struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root, |
| 98 | int num_blocks); |
Sage Weil | 9ca9ee0 | 2008-08-04 10:41:27 -0400 | [diff] [blame] | 99 | struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *r, |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 100 | int num_blocks); |
Sage Weil | 4620459 | 2010-10-29 15:41:32 -0400 | [diff] [blame] | 101 | int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid); |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 102 | int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, |
| 103 | struct btrfs_root *root); |
| 104 | int btrfs_commit_tree_roots(struct btrfs_trans_handle *trans, |
| 105 | struct btrfs_root *root); |
Chris Mason | 08607c1 | 2007-06-08 15:33:54 -0400 | [diff] [blame] | 106 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 107 | int btrfs_add_dead_root(struct btrfs_root *root); |
| 108 | int btrfs_drop_dead_root(struct btrfs_root *root); |
Chris Mason | e9d0b13 | 2007-08-10 14:06:19 -0400 | [diff] [blame] | 109 | int btrfs_defrag_root(struct btrfs_root *root, int cacheonly); |
| 110 | int btrfs_clean_old_snapshots(struct btrfs_root *root); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 111 | int btrfs_commit_transaction(struct btrfs_trans_handle *trans, |
| 112 | struct btrfs_root *root); |
Sage Weil | bb9c12c | 2010-10-29 15:37:34 -0400 | [diff] [blame] | 113 | int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans, |
| 114 | struct btrfs_root *root, |
| 115 | int wait_for_unblock); |
Chris Mason | 89ce8a6 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 116 | int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans, |
| 117 | struct btrfs_root *root); |
Yan, Zheng | 8929ecfa | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 118 | int btrfs_should_end_transaction(struct btrfs_trans_handle *trans, |
| 119 | struct btrfs_root *root); |
Chris Mason | ab78c84 | 2008-07-29 16:15:18 -0400 | [diff] [blame] | 120 | void btrfs_throttle(struct btrfs_root *root); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 121 | int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans, |
| 122 | struct btrfs_root *root); |
Chris Mason | d0c803c | 2008-09-11 16:17:57 -0400 | [diff] [blame] | 123 | int btrfs_write_and_wait_marked_extents(struct btrfs_root *root, |
Yan, Zheng | 8cef4e1 | 2009-11-12 09:33:26 +0000 | [diff] [blame] | 124 | struct extent_io_tree *dirty_pages, int mark); |
Chris Mason | 690587d | 2009-10-13 13:29:19 -0400 | [diff] [blame] | 125 | int btrfs_write_marked_extents(struct btrfs_root *root, |
Yan, Zheng | 8cef4e1 | 2009-11-12 09:33:26 +0000 | [diff] [blame] | 126 | struct extent_io_tree *dirty_pages, int mark); |
Chris Mason | 690587d | 2009-10-13 13:29:19 -0400 | [diff] [blame] | 127 | int btrfs_wait_marked_extents(struct btrfs_root *root, |
Yan, Zheng | 8cef4e1 | 2009-11-12 09:33:26 +0000 | [diff] [blame] | 128 | struct extent_io_tree *dirty_pages, int mark); |
Yan, Zheng | 8929ecfa | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 129 | int btrfs_transaction_blocked(struct btrfs_fs_info *info); |
Chris Mason | f36f304 | 2009-07-30 10:04:48 -0400 | [diff] [blame] | 130 | int btrfs_transaction_in_commit(struct btrfs_fs_info *info); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 131 | #endif |