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" |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 23 | #include "ctree.h" |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 24 | |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 25 | struct btrfs_transaction { |
| 26 | u64 transid; |
Chris Mason | b7ec40d | 2009-03-12 20:12:45 -0400 | [diff] [blame] | 27 | /* |
| 28 | * total writers in this transaction, it must be zero before the |
| 29 | * transaction can end |
| 30 | */ |
Josef Bacik | 13c5a93 | 2011-04-11 15:45:29 -0400 | [diff] [blame] | 31 | atomic_t num_writers; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 32 | atomic_t use_count; |
Chris Mason | b7ec40d | 2009-03-12 20:12:45 -0400 | [diff] [blame] | 33 | |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 34 | unsigned long num_joined; |
Josef Bacik | a4abeea | 2011-04-11 17:25:13 -0400 | [diff] [blame] | 35 | |
| 36 | spinlock_t commit_lock; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 37 | int in_commit; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 38 | int commit_done; |
Chris Mason | f929574 | 2008-07-17 12:54:14 -0400 | [diff] [blame] | 39 | int blocked; |
Chris Mason | 8fd1779 | 2007-04-19 21:01:03 -0400 | [diff] [blame] | 40 | struct list_head list; |
Chris Mason | d1310b2 | 2008-01-24 16:13:08 -0500 | [diff] [blame] | 41 | struct extent_io_tree dirty_pages; |
Chris Mason | 08607c1 | 2007-06-08 15:33:54 -0400 | [diff] [blame] | 42 | unsigned long start_time; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 43 | wait_queue_head_t writer_wait; |
| 44 | wait_queue_head_t commit_wait; |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 45 | struct list_head pending_snapshots; |
Josef Bacik | 569e0f3 | 2013-02-13 11:09:14 -0500 | [diff] [blame] | 46 | struct list_head ordered_operations; |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 47 | struct btrfs_delayed_ref_root delayed_refs; |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 48 | int aborted; |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 49 | }; |
| 50 | |
Miao Xie | a698d075 | 2012-09-20 01:51:59 -0600 | [diff] [blame] | 51 | enum btrfs_trans_type { |
| 52 | TRANS_START, |
| 53 | TRANS_JOIN, |
| 54 | TRANS_USERSPACE, |
| 55 | TRANS_JOIN_NOLOCK, |
Miao Xie | 354aa0f | 2012-09-20 01:54:00 -0600 | [diff] [blame] | 56 | TRANS_ATTACH, |
Miao Xie | a698d075 | 2012-09-20 01:51:59 -0600 | [diff] [blame] | 57 | }; |
| 58 | |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 59 | struct btrfs_trans_handle { |
| 60 | u64 transid; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 61 | u64 bytes_reserved; |
Arne Jansen | c556723 | 2011-09-14 15:44:05 +0200 | [diff] [blame] | 62 | u64 qgroup_reserved; |
Josef Bacik | 2a1eb46 | 2011-04-13 15:15:59 -0400 | [diff] [blame] | 63 | unsigned long use_count; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 64 | unsigned long blocks_reserved; |
| 65 | unsigned long blocks_used; |
Chris Mason | 56bec29 | 2009-03-13 10:10:06 -0400 | [diff] [blame] | 66 | unsigned long delayed_ref_updates; |
Yan, Zheng | f0486c6 | 2010-05-16 10:46:25 -0400 | [diff] [blame] | 67 | struct btrfs_transaction *transaction; |
| 68 | struct btrfs_block_rsv *block_rsv; |
Josef Bacik | 2a1eb46 | 2011-04-13 15:15:59 -0400 | [diff] [blame] | 69 | struct btrfs_block_rsv *orig_rsv; |
Miao Xie | a698d075 | 2012-09-20 01:51:59 -0600 | [diff] [blame] | 70 | short aborted; |
| 71 | short adding_csums; |
Josef Bacik | c6b305a | 2012-12-18 09:16:16 -0500 | [diff] [blame] | 72 | bool allocating_chunk; |
Miao Xie | a698d075 | 2012-09-20 01:51:59 -0600 | [diff] [blame] | 73 | enum btrfs_trans_type type; |
Arne Jansen | d13603e | 2011-09-13 11:40:09 +0200 | [diff] [blame] | 74 | /* |
| 75 | * this root is only needed to validate that the root passed to |
| 76 | * start_transaction is the same as the one passed to end_transaction. |
| 77 | * Subvolume quota depends on this |
| 78 | */ |
| 79 | struct btrfs_root *root; |
Arne Jansen | bed92ea | 2012-06-28 18:03:02 +0200 | [diff] [blame] | 80 | struct seq_list delayed_ref_elem; |
| 81 | struct list_head qgroup_ref_list; |
Josef Bacik | ea658ba | 2012-09-11 16:57:25 -0400 | [diff] [blame] | 82 | struct list_head new_bgs; |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 83 | }; |
| 84 | |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 85 | struct btrfs_pending_snapshot { |
Chris Mason | 3de4586 | 2008-11-17 21:02:50 -0500 | [diff] [blame] | 86 | struct dentry *dentry; |
Miao Xie | e9662f7 | 2013-02-28 10:01:15 +0000 | [diff] [blame] | 87 | struct inode *dir; |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 88 | struct btrfs_root *root; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 89 | struct btrfs_root *snap; |
Arne Jansen | 6f72c7e | 2011-09-14 15:58:21 +0200 | [diff] [blame] | 90 | struct btrfs_qgroup_inherit *inherit; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 91 | /* block reservation for the operation */ |
| 92 | struct btrfs_block_rsv block_rsv; |
Miao Xie | d5c1207 | 2013-02-28 10:04:33 +0000 | [diff] [blame] | 93 | u64 qgroup_reserved; |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 94 | /* extra metadata reseration for relocation */ |
| 95 | int error; |
Li Zefan | b83cc96 | 2010-12-20 16:04:08 +0800 | [diff] [blame] | 96 | bool readonly; |
Chris Mason | 3063d29 | 2008-01-08 15:46:30 -0500 | [diff] [blame] | 97 | struct list_head list; |
| 98 | }; |
| 99 | |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 100 | static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans, |
| 101 | struct inode *inode) |
| 102 | { |
| 103 | BTRFS_I(inode)->last_trans = trans->transaction->transid; |
Chris Mason | 257c62e | 2009-10-13 13:21:08 -0400 | [diff] [blame] | 104 | BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid; |
Liu Bo | 46d8bc3 | 2012-08-29 01:07:55 -0600 | [diff] [blame] | 105 | BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit; |
Josef Bacik | 15ee9bc | 2007-08-10 16:22:09 -0400 | [diff] [blame] | 106 | } |
| 107 | |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 108 | int btrfs_end_transaction(struct btrfs_trans_handle *trans, |
| 109 | struct btrfs_root *root); |
| 110 | struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root, |
Yan, Zheng | a22285a | 2010-05-16 10:48:46 -0400 | [diff] [blame] | 111 | int num_items); |
Miao Xie | 08e007d | 2012-10-16 11:33:38 +0000 | [diff] [blame] | 112 | struct btrfs_trans_handle *btrfs_start_transaction_lflush( |
Miao Xie | 8407aa4 | 2012-09-07 01:43:32 -0600 | [diff] [blame] | 113 | struct btrfs_root *root, int num_items); |
Josef Bacik | 7a7eaa4 | 2011-04-13 12:54:33 -0400 | [diff] [blame] | 114 | struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root); |
| 115 | struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root); |
Miao Xie | 354aa0f | 2012-09-20 01:54:00 -0600 | [diff] [blame] | 116 | struct btrfs_trans_handle *btrfs_attach_transaction(struct btrfs_root *root); |
Miao Xie | d4edf39 | 2013-02-20 09:17:06 +0000 | [diff] [blame] | 117 | struct btrfs_trans_handle *btrfs_attach_transaction_barrier( |
| 118 | struct btrfs_root *root); |
Josef Bacik | 7a7eaa4 | 2011-04-13 12:54:33 -0400 | [diff] [blame] | 119 | struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root); |
Sage Weil | 4620459 | 2010-10-29 15:41:32 -0400 | [diff] [blame] | 120 | int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid); |
Chris Mason | 79154b1 | 2007-03-22 15:59:16 -0400 | [diff] [blame] | 121 | int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, |
| 122 | struct btrfs_root *root); |
Chris Mason | 08607c1 | 2007-06-08 15:33:54 -0400 | [diff] [blame] | 123 | |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 124 | int btrfs_add_dead_root(struct btrfs_root *root); |
Eric Sandeen | de78b51 | 2013-01-31 18:21:12 +0000 | [diff] [blame] | 125 | int btrfs_defrag_root(struct btrfs_root *root); |
David Sterba | 9d1a2a3 | 2013-03-12 15:13:28 +0000 | [diff] [blame] | 126 | int btrfs_clean_one_deleted_snapshot(struct btrfs_root *root); |
Chris Mason | 5f39d39 | 2007-10-15 16:14:19 -0400 | [diff] [blame] | 127 | int btrfs_commit_transaction(struct btrfs_trans_handle *trans, |
| 128 | struct btrfs_root *root); |
Sage Weil | bb9c12c | 2010-10-29 15:37:34 -0400 | [diff] [blame] | 129 | int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans, |
| 130 | struct btrfs_root *root, |
| 131 | int wait_for_unblock); |
Chris Mason | 89ce8a6 | 2008-06-25 16:01:31 -0400 | [diff] [blame] | 132 | int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans, |
| 133 | struct btrfs_root *root); |
Miao Xie | 16cdcec | 2011-04-22 18:12:22 +0800 | [diff] [blame] | 134 | int btrfs_end_transaction_dmeta(struct btrfs_trans_handle *trans, |
| 135 | struct btrfs_root *root); |
Yan, Zheng | 8929ecfa | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 136 | int btrfs_should_end_transaction(struct btrfs_trans_handle *trans, |
| 137 | struct btrfs_root *root); |
Chris Mason | ab78c84 | 2008-07-29 16:15:18 -0400 | [diff] [blame] | 138 | void btrfs_throttle(struct btrfs_root *root); |
Yan Zheng | 5d4f98a | 2009-06-10 10:45:14 -0400 | [diff] [blame] | 139 | int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans, |
| 140 | struct btrfs_root *root); |
Chris Mason | d0c803c | 2008-09-11 16:17:57 -0400 | [diff] [blame] | 141 | int btrfs_write_and_wait_marked_extents(struct btrfs_root *root, |
Yan, Zheng | 8cef4e1 | 2009-11-12 09:33:26 +0000 | [diff] [blame] | 142 | struct extent_io_tree *dirty_pages, int mark); |
Chris Mason | 690587d | 2009-10-13 13:29:19 -0400 | [diff] [blame] | 143 | int btrfs_write_marked_extents(struct btrfs_root *root, |
Yan, Zheng | 8cef4e1 | 2009-11-12 09:33:26 +0000 | [diff] [blame] | 144 | struct extent_io_tree *dirty_pages, int mark); |
Chris Mason | 690587d | 2009-10-13 13:29:19 -0400 | [diff] [blame] | 145 | int btrfs_wait_marked_extents(struct btrfs_root *root, |
Yan, Zheng | 8cef4e1 | 2009-11-12 09:33:26 +0000 | [diff] [blame] | 146 | struct extent_io_tree *dirty_pages, int mark); |
Yan, Zheng | 8929ecfa | 2010-05-16 10:49:58 -0400 | [diff] [blame] | 147 | int btrfs_transaction_blocked(struct btrfs_fs_info *info); |
Chris Mason | f36f304 | 2009-07-30 10:04:48 -0400 | [diff] [blame] | 148 | int btrfs_transaction_in_commit(struct btrfs_fs_info *info); |
Jeff Mahoney | 49b25e0 | 2012-03-01 17:24:58 +0100 | [diff] [blame] | 149 | void put_transaction(struct btrfs_transaction *transaction); |
Chris Mason | e089f05 | 2007-03-16 16:20:31 -0400 | [diff] [blame] | 150 | #endif |