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6cbd5570 CM |
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 | ||
dc17ff8f CM |
19 | #ifndef __BTRFS_TRANSACTION__ |
20 | #define __BTRFS_TRANSACTION__ | |
31f3c99b | 21 | #include "btrfs_inode.h" |
56bec294 | 22 | #include "delayed-ref.h" |
bed92eae | 23 | #include "ctree.h" |
e089f05c | 24 | |
79154b1b CM |
25 | struct btrfs_transaction { |
26 | u64 transid; | |
b7ec40d7 CM |
27 | /* |
28 | * total writers in this transaction, it must be zero before the | |
29 | * transaction can end | |
30 | */ | |
13c5a93e | 31 | atomic_t num_writers; |
a4abeea4 | 32 | atomic_t use_count; |
b7ec40d7 | 33 | |
15ee9bc7 | 34 | unsigned long num_joined; |
a4abeea4 JB |
35 | |
36 | spinlock_t commit_lock; | |
79154b1b | 37 | int in_commit; |
79154b1b | 38 | int commit_done; |
f9295749 | 39 | int blocked; |
8fd17795 | 40 | struct list_head list; |
d1310b2e | 41 | struct extent_io_tree dirty_pages; |
08607c1b | 42 | unsigned long start_time; |
79154b1b CM |
43 | wait_queue_head_t writer_wait; |
44 | wait_queue_head_t commit_wait; | |
3063d29f | 45 | struct list_head pending_snapshots; |
56bec294 | 46 | struct btrfs_delayed_ref_root delayed_refs; |
49b25e05 | 47 | int aborted; |
79154b1b CM |
48 | }; |
49 | ||
a698d075 MX |
50 | enum btrfs_trans_type { |
51 | TRANS_START, | |
52 | TRANS_JOIN, | |
53 | TRANS_USERSPACE, | |
54 | TRANS_JOIN_NOLOCK, | |
354aa0fb | 55 | TRANS_ATTACH, |
a698d075 MX |
56 | }; |
57 | ||
e089f05c CM |
58 | struct btrfs_trans_handle { |
59 | u64 transid; | |
f0486c68 | 60 | u64 bytes_reserved; |
c5567237 | 61 | u64 qgroup_reserved; |
2a1eb461 | 62 | unsigned long use_count; |
e089f05c CM |
63 | unsigned long blocks_reserved; |
64 | unsigned long blocks_used; | |
56bec294 | 65 | unsigned long delayed_ref_updates; |
f0486c68 YZ |
66 | struct btrfs_transaction *transaction; |
67 | struct btrfs_block_rsv *block_rsv; | |
2a1eb461 | 68 | struct btrfs_block_rsv *orig_rsv; |
a698d075 MX |
69 | short aborted; |
70 | short adding_csums; | |
c6b305a8 | 71 | bool allocating_chunk; |
a698d075 | 72 | enum btrfs_trans_type type; |
d13603ef AJ |
73 | /* |
74 | * this root is only needed to validate that the root passed to | |
75 | * start_transaction is the same as the one passed to end_transaction. | |
76 | * Subvolume quota depends on this | |
77 | */ | |
78 | struct btrfs_root *root; | |
bed92eae AJ |
79 | struct seq_list delayed_ref_elem; |
80 | struct list_head qgroup_ref_list; | |
ea658bad | 81 | struct list_head new_bgs; |
e089f05c CM |
82 | }; |
83 | ||
3063d29f | 84 | struct btrfs_pending_snapshot { |
3de4586c | 85 | struct dentry *dentry; |
3063d29f | 86 | struct btrfs_root *root; |
a22285a6 | 87 | struct btrfs_root *snap; |
6f72c7e2 | 88 | struct btrfs_qgroup_inherit *inherit; |
a22285a6 YZ |
89 | /* block reservation for the operation */ |
90 | struct btrfs_block_rsv block_rsv; | |
91 | /* extra metadata reseration for relocation */ | |
92 | int error; | |
b83cc969 | 93 | bool readonly; |
3063d29f CM |
94 | struct list_head list; |
95 | }; | |
96 | ||
15ee9bc7 JB |
97 | static inline void btrfs_set_inode_last_trans(struct btrfs_trans_handle *trans, |
98 | struct inode *inode) | |
99 | { | |
100 | BTRFS_I(inode)->last_trans = trans->transaction->transid; | |
257c62e1 | 101 | BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid; |
46d8bc34 | 102 | BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit; |
15ee9bc7 JB |
103 | } |
104 | ||
79154b1b CM |
105 | int btrfs_end_transaction(struct btrfs_trans_handle *trans, |
106 | struct btrfs_root *root); | |
107 | struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root, | |
a22285a6 | 108 | int num_items); |
08e007d2 | 109 | struct btrfs_trans_handle *btrfs_start_transaction_lflush( |
8407aa46 | 110 | struct btrfs_root *root, int num_items); |
7a7eaa40 JB |
111 | struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root); |
112 | struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root); | |
354aa0fb | 113 | struct btrfs_trans_handle *btrfs_attach_transaction(struct btrfs_root *root); |
7a7eaa40 | 114 | struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root); |
46204592 | 115 | int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid); |
79154b1b CM |
116 | int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans, |
117 | struct btrfs_root *root); | |
08607c1b | 118 | |
5d4f98a2 | 119 | int btrfs_add_dead_root(struct btrfs_root *root); |
e9d0b13b CM |
120 | int btrfs_defrag_root(struct btrfs_root *root, int cacheonly); |
121 | int btrfs_clean_old_snapshots(struct btrfs_root *root); | |
5f39d397 CM |
122 | int btrfs_commit_transaction(struct btrfs_trans_handle *trans, |
123 | struct btrfs_root *root); | |
bb9c12c9 SW |
124 | int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans, |
125 | struct btrfs_root *root, | |
126 | int wait_for_unblock); | |
89ce8a63 CM |
127 | int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans, |
128 | struct btrfs_root *root); | |
16cdcec7 MX |
129 | int btrfs_end_transaction_dmeta(struct btrfs_trans_handle *trans, |
130 | struct btrfs_root *root); | |
8929ecfa YZ |
131 | int btrfs_should_end_transaction(struct btrfs_trans_handle *trans, |
132 | struct btrfs_root *root); | |
ab78c84d | 133 | void btrfs_throttle(struct btrfs_root *root); |
5d4f98a2 YZ |
134 | int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans, |
135 | struct btrfs_root *root); | |
d0c803c4 | 136 | int btrfs_write_and_wait_marked_extents(struct btrfs_root *root, |
8cef4e16 | 137 | struct extent_io_tree *dirty_pages, int mark); |
690587d1 | 138 | int btrfs_write_marked_extents(struct btrfs_root *root, |
8cef4e16 | 139 | struct extent_io_tree *dirty_pages, int mark); |
690587d1 | 140 | int btrfs_wait_marked_extents(struct btrfs_root *root, |
8cef4e16 | 141 | struct extent_io_tree *dirty_pages, int mark); |
8929ecfa | 142 | int btrfs_transaction_blocked(struct btrfs_fs_info *info); |
f36f3042 | 143 | int btrfs_transaction_in_commit(struct btrfs_fs_info *info); |
49b25e05 | 144 | void put_transaction(struct btrfs_transaction *transaction); |
e089f05c | 145 | #endif |