1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_JOURNAL_IO_H
3 #define _BCACHEFS_JOURNAL_IO_H
4
5 /*
6 * Only used for holding the journal entries we read in btree_journal_read()
7 * during cache_registration
8 */
9 struct journal_replay {
10 struct journal_ptr {
11 bool csum_good;
12 u8 dev;
13 u32 bucket;
14 u32 bucket_offset;
15 u64 sector;
16 } ptrs[BCH_REPLICAS_MAX];
17 unsigned nr_ptrs;
18
19 bool csum_good;
20 bool ignore;
21 /* must be last: */
22 struct jset j;
23 };
24
__jset_entry_type_next(struct jset * jset,struct jset_entry * entry,unsigned type)25 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
26 struct jset_entry *entry, unsigned type)
27 {
28 while (entry < vstruct_last(jset)) {
29 if (entry->type == type)
30 return entry;
31
32 entry = vstruct_next(entry);
33 }
34
35 return NULL;
36 }
37
38 #define for_each_jset_entry_type(entry, jset, type) \
39 for (entry = (jset)->start; \
40 (entry = __jset_entry_type_next(jset, entry, type)); \
41 entry = vstruct_next(entry))
42
43 #define jset_entry_for_each_key(_e, _k) \
44 for (_k = (_e)->start; \
45 _k < vstruct_last(_e); \
46 _k = bkey_next(_k))
47
48 #define for_each_jset_key(k, entry, jset) \
49 for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)\
50 jset_entry_for_each_key(entry, k)
51
52 int bch2_journal_entry_validate(struct bch_fs *, struct jset *,
53 struct jset_entry *, unsigned, int,
54 enum bkey_invalid_flags);
55 void bch2_journal_entry_to_text(struct printbuf *, struct bch_fs *,
56 struct jset_entry *);
57
58 void bch2_journal_ptrs_to_text(struct printbuf *, struct bch_fs *,
59 struct journal_replay *);
60
61 int bch2_journal_read(struct bch_fs *, u64 *, u64 *, u64 *);
62
63 CLOSURE_CALLBACK(bch2_journal_write);
64
65 #endif /* _BCACHEFS_JOURNAL_IO_H */
66