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19#ifndef __BTRFS_TRANSACTION__
20#define __BTRFS_TRANSACTION__
21#include "btrfs_inode.h"
22#include "delayed-ref.h"
23#include "ctree.h"
24
25struct btrfs_transaction {
26 u64 transid;
27
28
29
30
31 atomic_t num_writers;
32 atomic_t use_count;
33
34 unsigned long num_joined;
35
36 spinlock_t commit_lock;
37 int in_commit;
38 int commit_done;
39 int blocked;
40 struct list_head list;
41 struct extent_io_tree dirty_pages;
42 unsigned long start_time;
43 wait_queue_head_t writer_wait;
44 wait_queue_head_t commit_wait;
45 struct list_head pending_snapshots;
46 struct list_head ordered_operations;
47 struct btrfs_delayed_ref_root delayed_refs;
48 int aborted;
49};
50
51enum btrfs_trans_type {
52 TRANS_START,
53 TRANS_JOIN,
54 TRANS_USERSPACE,
55 TRANS_JOIN_NOLOCK,
56 TRANS_ATTACH,
57};
58
59struct btrfs_trans_handle {
60 u64 transid;
61 u64 bytes_reserved;
62 u64 qgroup_reserved;
63 unsigned long use_count;
64 unsigned long blocks_reserved;
65 unsigned long blocks_used;
66 unsigned long delayed_ref_updates;
67 struct btrfs_transaction *transaction;
68 struct btrfs_block_rsv *block_rsv;
69 struct btrfs_block_rsv *orig_rsv;
70 short aborted;
71 short adding_csums;
72 bool allocating_chunk;
73 enum btrfs_trans_type type;
74
75
76
77
78
79 struct btrfs_root *root;
80 struct seq_list delayed_ref_elem;
81 struct list_head qgroup_ref_list;
82 struct list_head new_bgs;
83};
84
85struct btrfs_pending_snapshot {
86 struct dentry *dentry;
87 struct inode *dir;
88 struct btrfs_root *root;
89 struct btrfs_root *snap;
90 struct btrfs_qgroup_inherit *inherit;
91
92 struct btrfs_block_rsv block_rsv;
93 u64 qgroup_reserved;
94
95 int error;
96 bool readonly;
97 struct list_head list;
98};
99
100static 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;
104 BTRFS_I(inode)->last_sub_trans = BTRFS_I(inode)->root->log_transid;
105 BTRFS_I(inode)->last_log_commit = BTRFS_I(inode)->root->last_log_commit;
106}
107
108int btrfs_end_transaction(struct btrfs_trans_handle *trans,
109 struct btrfs_root *root);
110struct btrfs_trans_handle *btrfs_start_transaction(struct btrfs_root *root,
111 int num_items);
112struct btrfs_trans_handle *btrfs_start_transaction_lflush(
113 struct btrfs_root *root, int num_items);
114struct btrfs_trans_handle *btrfs_join_transaction(struct btrfs_root *root);
115struct btrfs_trans_handle *btrfs_join_transaction_nolock(struct btrfs_root *root);
116struct btrfs_trans_handle *btrfs_attach_transaction(struct btrfs_root *root);
117struct btrfs_trans_handle *btrfs_attach_transaction_barrier(
118 struct btrfs_root *root);
119struct btrfs_trans_handle *btrfs_start_ioctl_transaction(struct btrfs_root *root);
120int btrfs_wait_for_commit(struct btrfs_root *root, u64 transid);
121int btrfs_write_and_wait_transaction(struct btrfs_trans_handle *trans,
122 struct btrfs_root *root);
123
124int btrfs_add_dead_root(struct btrfs_root *root);
125int btrfs_defrag_root(struct btrfs_root *root);
126int btrfs_clean_one_deleted_snapshot(struct btrfs_root *root);
127int btrfs_commit_transaction(struct btrfs_trans_handle *trans,
128 struct btrfs_root *root);
129int btrfs_commit_transaction_async(struct btrfs_trans_handle *trans,
130 struct btrfs_root *root,
131 int wait_for_unblock);
132int btrfs_end_transaction_throttle(struct btrfs_trans_handle *trans,
133 struct btrfs_root *root);
134int btrfs_end_transaction_dmeta(struct btrfs_trans_handle *trans,
135 struct btrfs_root *root);
136int btrfs_should_end_transaction(struct btrfs_trans_handle *trans,
137 struct btrfs_root *root);
138void btrfs_throttle(struct btrfs_root *root);
139int btrfs_record_root_in_trans(struct btrfs_trans_handle *trans,
140 struct btrfs_root *root);
141int btrfs_write_and_wait_marked_extents(struct btrfs_root *root,
142 struct extent_io_tree *dirty_pages, int mark);
143int btrfs_write_marked_extents(struct btrfs_root *root,
144 struct extent_io_tree *dirty_pages, int mark);
145int btrfs_wait_marked_extents(struct btrfs_root *root,
146 struct extent_io_tree *dirty_pages, int mark);
147int btrfs_transaction_blocked(struct btrfs_fs_info *info);
148int btrfs_transaction_in_commit(struct btrfs_fs_info *info);
149#endif
150