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Update bcachefs sources to f638850417 bcachefs: bch2_trans_log_msg()
[bcachefs-tools-debian] / libbcachefs / btree_update.h
1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_BTREE_UPDATE_H
3 #define _BCACHEFS_BTREE_UPDATE_H
4
5 #include "btree_iter.h"
6 #include "journal.h"
7
8 struct bch_fs;
9 struct btree;
10
11 void bch2_btree_node_lock_for_insert(struct btree_trans *, struct btree_path *,
12                                      struct btree *);
13 bool bch2_btree_bset_insert_key(struct btree_trans *, struct btree_path *,
14                                 struct btree *, struct btree_node_iter *,
15                                 struct bkey_i *);
16 void bch2_btree_add_journal_pin(struct bch_fs *, struct btree *, u64);
17
18 enum btree_insert_flags {
19         /* First two bits for journal watermark: */
20         __BTREE_INSERT_NOFAIL = 2,
21         __BTREE_INSERT_NOCHECK_RW,
22         __BTREE_INSERT_LAZY_RW,
23         __BTREE_INSERT_USE_RESERVE,
24         __BTREE_INSERT_JOURNAL_REPLAY,
25         __BTREE_INSERT_JOURNAL_RECLAIM,
26         __BTREE_INSERT_NOWAIT,
27         __BTREE_INSERT_GC_LOCK_HELD,
28         __BCH_HASH_SET_MUST_CREATE,
29         __BCH_HASH_SET_MUST_REPLACE,
30 };
31
32 /* Don't check for -ENOSPC: */
33 #define BTREE_INSERT_NOFAIL             (1 << __BTREE_INSERT_NOFAIL)
34
35 #define BTREE_INSERT_NOCHECK_RW         (1 << __BTREE_INSERT_NOCHECK_RW)
36 #define BTREE_INSERT_LAZY_RW            (1 << __BTREE_INSERT_LAZY_RW)
37
38 /* for copygc, or when merging btree nodes */
39 #define BTREE_INSERT_USE_RESERVE        (1 << __BTREE_INSERT_USE_RESERVE)
40
41 /* Insert is for journal replay - don't get journal reservations: */
42 #define BTREE_INSERT_JOURNAL_REPLAY     (1 << __BTREE_INSERT_JOURNAL_REPLAY)
43
44 /* Insert is being called from journal reclaim path: */
45 #define BTREE_INSERT_JOURNAL_RECLAIM (1 << __BTREE_INSERT_JOURNAL_RECLAIM)
46
47 /* Don't block on allocation failure (for new btree nodes: */
48 #define BTREE_INSERT_NOWAIT             (1 << __BTREE_INSERT_NOWAIT)
49 #define BTREE_INSERT_GC_LOCK_HELD       (1 << __BTREE_INSERT_GC_LOCK_HELD)
50
51 #define BCH_HASH_SET_MUST_CREATE        (1 << __BCH_HASH_SET_MUST_CREATE)
52 #define BCH_HASH_SET_MUST_REPLACE       (1 << __BCH_HASH_SET_MUST_REPLACE)
53
54 int bch2_btree_delete_at(struct btree_trans *, struct btree_iter *, unsigned);
55
56 int __bch2_btree_insert(struct btree_trans *, enum btree_id, struct bkey_i *);
57 int bch2_btree_insert(struct bch_fs *, enum btree_id, struct bkey_i *,
58                      struct disk_reservation *, u64 *, int flags);
59
60 int bch2_btree_delete_range_trans(struct btree_trans *, enum btree_id,
61                                   struct bpos, struct bpos, unsigned, u64 *);
62 int bch2_btree_delete_range(struct bch_fs *, enum btree_id,
63                             struct bpos, struct bpos, unsigned, u64 *);
64
65 int bch2_btree_node_rewrite(struct btree_trans *, struct btree_iter *,
66                             struct btree *, unsigned);
67 void bch2_btree_node_rewrite_async(struct bch_fs *, struct btree *);
68 int bch2_btree_node_update_key(struct btree_trans *, struct btree_iter *,
69                                struct btree *, struct bkey_i *, bool);
70 int bch2_btree_node_update_key_get_iter(struct btree_trans *,
71                                 struct btree *, struct bkey_i *, bool);
72
73 int bch2_trans_update_extent(struct btree_trans *, struct btree_iter *,
74                              struct bkey_i *, enum btree_update_flags);
75
76 int __must_check bch2_trans_update(struct btree_trans *, struct btree_iter *,
77                                    struct bkey_i *, enum btree_update_flags);
78
79 void bch2_trans_commit_hook(struct btree_trans *,
80                             struct btree_trans_commit_hook *);
81 int __bch2_trans_commit(struct btree_trans *);
82
83 int bch2_trans_log_msg(struct btree_trans *, const char *);
84
85 /**
86  * bch2_trans_commit - insert keys at given iterator positions
87  *
88  * This is main entry point for btree updates.
89  *
90  * Return values:
91  * -EINTR: locking changed, this function should be called again.
92  * -EROFS: filesystem read only
93  * -EIO: journal or btree node IO error
94  */
95 static inline int bch2_trans_commit(struct btree_trans *trans,
96                                     struct disk_reservation *disk_res,
97                                     u64 *journal_seq,
98                                     unsigned flags)
99 {
100         trans->disk_res         = disk_res;
101         trans->journal_seq      = journal_seq;
102         trans->flags            = flags;
103
104         return __bch2_trans_commit(trans);
105 }
106
107 #define lockrestart_do(_trans, _do)                                     \
108 ({                                                                      \
109         int _ret;                                                       \
110                                                                         \
111         do {                                                            \
112                 bch2_trans_begin(_trans);                               \
113                 _ret = (_do);                                           \
114         } while (_ret == -EINTR);                                       \
115                                                                         \
116         _ret;                                                           \
117 })
118
119 #define __bch2_trans_do(_trans, _disk_res, _journal_seq, _flags, _do)   \
120         lockrestart_do(_trans, _do ?: bch2_trans_commit(_trans, (_disk_res),\
121                                         (_journal_seq), (_flags)))
122
123 #define bch2_trans_do(_c, _disk_res, _journal_seq, _flags, _do)         \
124 ({                                                                      \
125         struct btree_trans trans;                                       \
126         int _ret;                                                       \
127                                                                         \
128         bch2_trans_init(&trans, (_c), 0, 0);                            \
129         _ret = __bch2_trans_do(&trans, _disk_res, _journal_seq, _flags, \
130                                _do);                                    \
131         bch2_trans_exit(&trans);                                        \
132                                                                         \
133         _ret;                                                           \
134 })
135
136 #define trans_for_each_update(_trans, _i)                               \
137         for ((_i) = (_trans)->updates;                                  \
138              (_i) < (_trans)->updates + (_trans)->nr_updates;           \
139              (_i)++)
140
141 #endif /* _BCACHEFS_BTREE_UPDATE_H */