1 /* SPDX-License-Identifier: GPL-2.0 */
2 #ifndef _BCACHEFS_JOURNAL_IO_H
3 #define _BCACHEFS_JOURNAL_IO_H
4
5 #include "darray.h"
6
7 void bch2_journal_pos_from_member_info_set(struct bch_fs *);
8 void bch2_journal_pos_from_member_info_resume(struct bch_fs *);
9
10 struct journal_ptr {
11 bool csum_good;
12 struct bch_csum csum;
13 u8 dev;
14 u32 bucket;
15 u32 bucket_offset;
16 u64 sector;
17 };
18
19 /*
20 * Only used for holding the journal entries we read in btree_journal_read()
21 * during cache_registration
22 */
23 struct journal_replay {
24 DARRAY_PREALLOCATED(struct journal_ptr, 8) ptrs;
25
26 bool csum_good;
27 bool ignore_blacklisted;
28 bool ignore_not_dirty;
29 /* must be last: */
30 struct jset j;
31 };
32
journal_replay_ignore(struct journal_replay * i)33 static inline bool journal_replay_ignore(struct journal_replay *i)
34 {
35 return !i || i->ignore_blacklisted || i->ignore_not_dirty;
36 }
37
__jset_entry_type_next(struct jset * jset,struct jset_entry * entry,unsigned type)38 static inline struct jset_entry *__jset_entry_type_next(struct jset *jset,
39 struct jset_entry *entry, unsigned type)
40 {
41 while (entry < vstruct_last(jset)) {
42 if (entry->type == type)
43 return entry;
44
45 entry = vstruct_next(entry);
46 }
47
48 return NULL;
49 }
50
51 #define for_each_jset_entry_type(entry, jset, type) \
52 for (struct jset_entry *entry = (jset)->start; \
53 (entry = __jset_entry_type_next(jset, entry, type)); \
54 entry = vstruct_next(entry))
55
56 #define jset_entry_for_each_key(_e, _k) \
57 for (struct bkey_i *_k = (_e)->start; \
58 _k < vstruct_last(_e); \
59 _k = bkey_next(_k))
60
61 #define for_each_jset_key(k, entry, jset) \
62 for_each_jset_entry_type(entry, jset, BCH_JSET_ENTRY_btree_keys)\
63 jset_entry_for_each_key(entry, k)
64
65 int bch2_journal_entry_validate(struct bch_fs *, struct jset *,
66 struct jset_entry *, unsigned, int,
67 struct bkey_validate_context);
68 void bch2_journal_entry_to_text(struct printbuf *, struct bch_fs *,
69 struct jset_entry *);
70
71 void bch2_journal_ptrs_to_text(struct printbuf *, struct bch_fs *,
72 struct journal_replay *);
73
74 int bch2_journal_read(struct bch_fs *, u64 *, u64 *, u64 *);
75
76 CLOSURE_CALLBACK(bch2_journal_write);
77
jset_entry_init(struct jset_entry ** end,size_t size)78 static inline struct jset_entry *jset_entry_init(struct jset_entry **end, size_t size)
79 {
80 struct jset_entry *entry = *end;
81 unsigned u64s = DIV_ROUND_UP(size, sizeof(u64));
82
83 memset(entry, 0, u64s * sizeof(u64));
84 /*
85 * The u64s field counts from the start of data, ignoring the shared
86 * fields.
87 */
88 entry->u64s = cpu_to_le16(u64s - 1);
89
90 *end = vstruct_next(*end);
91 return entry;
92 }
93
94 #endif /* _BCACHEFS_JOURNAL_IO_H */
95