Linux kernel mirror (for testing)
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linux
1/* SPDX-License-Identifier: GPL-2.0 */
2#ifndef _BCACHEFS_REPLICAS_H
3#define _BCACHEFS_REPLICAS_H
4
5#include "bkey.h"
6#include "eytzinger.h"
7#include "replicas_types.h"
8
9void bch2_replicas_entry_sort(struct bch_replicas_entry_v1 *);
10void bch2_replicas_entry_to_text(struct printbuf *,
11 struct bch_replicas_entry_v1 *);
12int bch2_replicas_entry_validate(struct bch_replicas_entry_v1 *,
13 struct bch_fs *, struct printbuf *);
14void bch2_cpu_replicas_to_text(struct printbuf *, struct bch_replicas_cpu *);
15
16static inline struct bch_replicas_entry_v1 *
17cpu_replicas_entry(struct bch_replicas_cpu *r, unsigned i)
18{
19 return (void *) r->entries + r->entry_size * i;
20}
21
22int bch2_replicas_entry_idx(struct bch_fs *,
23 struct bch_replicas_entry_v1 *);
24
25void bch2_devlist_to_replicas(struct bch_replicas_entry_v1 *,
26 enum bch_data_type,
27 struct bch_devs_list);
28
29bool bch2_replicas_marked_locked(struct bch_fs *,
30 struct bch_replicas_entry_v1 *);
31bool bch2_replicas_marked(struct bch_fs *, struct bch_replicas_entry_v1 *);
32int bch2_mark_replicas(struct bch_fs *,
33 struct bch_replicas_entry_v1 *);
34
35void bch2_bkey_to_replicas(struct bch_replicas_entry_v1 *, struct bkey_s_c);
36
37static inline void bch2_replicas_entry_cached(struct bch_replicas_entry_v1 *e,
38 unsigned dev)
39{
40 e->data_type = BCH_DATA_cached;
41 e->nr_devs = 1;
42 e->nr_required = 1;
43 e->devs[0] = dev;
44}
45
46bool bch2_have_enough_devs(struct bch_fs *, struct bch_devs_mask,
47 unsigned, bool);
48
49unsigned bch2_sb_dev_has_data(struct bch_sb *, unsigned);
50unsigned bch2_dev_has_data(struct bch_fs *, struct bch_dev *);
51
52int bch2_replicas_gc_end(struct bch_fs *, int);
53int bch2_replicas_gc_start(struct bch_fs *, unsigned);
54int bch2_replicas_gc2(struct bch_fs *);
55
56#define for_each_cpu_replicas_entry(_r, _i) \
57 for (_i = (_r)->entries; \
58 (void *) (_i) < (void *) (_r)->entries + (_r)->nr * (_r)->entry_size;\
59 _i = (void *) (_i) + (_r)->entry_size)
60
61/* iterate over superblock replicas - used by userspace tools: */
62
63#define replicas_entry_next(_i) \
64 ((typeof(_i)) ((void *) (_i) + replicas_entry_bytes(_i)))
65
66#define for_each_replicas_entry(_r, _i) \
67 for (_i = (_r)->entries; \
68 (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
69 (_i) = replicas_entry_next(_i))
70
71#define for_each_replicas_entry_v0(_r, _i) \
72 for (_i = (_r)->entries; \
73 (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
74 (_i) = replicas_entry_next(_i))
75
76int bch2_sb_replicas_to_cpu_replicas(struct bch_fs *);
77
78extern const struct bch_sb_field_ops bch_sb_field_ops_replicas;
79extern const struct bch_sb_field_ops bch_sb_field_ops_replicas_v0;
80
81void bch2_fs_replicas_exit(struct bch_fs *);
82
83#endif /* _BCACHEFS_REPLICAS_H */