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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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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_sb *, 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);
28bool bch2_replicas_marked(struct bch_fs *, struct bch_replicas_entry_v1 *);
29int bch2_mark_replicas(struct bch_fs *,
30 struct bch_replicas_entry_v1 *);
31
32static inline struct replicas_delta *
33replicas_delta_next(struct replicas_delta *d)
34{
35 return (void *) d + replicas_entry_bytes(&d->r) + 8;
36}
37
38int bch2_replicas_delta_list_mark(struct bch_fs *, struct replicas_delta_list *);
39
40void bch2_bkey_to_replicas(struct bch_replicas_entry_v1 *, struct bkey_s_c);
41
42static inline void bch2_replicas_entry_cached(struct bch_replicas_entry_v1 *e,
43 unsigned dev)
44{
45 e->data_type = BCH_DATA_cached;
46 e->nr_devs = 1;
47 e->nr_required = 1;
48 e->devs[0] = dev;
49}
50
51bool bch2_have_enough_devs(struct bch_fs *, struct bch_devs_mask,
52 unsigned, bool);
53
54unsigned bch2_sb_dev_has_data(struct bch_sb *, unsigned);
55unsigned bch2_dev_has_data(struct bch_fs *, struct bch_dev *);
56
57int bch2_replicas_gc_end(struct bch_fs *, int);
58int bch2_replicas_gc_start(struct bch_fs *, unsigned);
59int bch2_replicas_gc2(struct bch_fs *);
60
61int bch2_replicas_set_usage(struct bch_fs *,
62 struct bch_replicas_entry_v1 *,
63 u64);
64
65#define for_each_cpu_replicas_entry(_r, _i) \
66 for (_i = (_r)->entries; \
67 (void *) (_i) < (void *) (_r)->entries + (_r)->nr * (_r)->entry_size;\
68 _i = (void *) (_i) + (_r)->entry_size)
69
70/* iterate over superblock replicas - used by userspace tools: */
71
72#define replicas_entry_next(_i) \
73 ((typeof(_i)) ((void *) (_i) + replicas_entry_bytes(_i)))
74
75#define for_each_replicas_entry(_r, _i) \
76 for (_i = (_r)->entries; \
77 (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
78 (_i) = replicas_entry_next(_i))
79
80#define for_each_replicas_entry_v0(_r, _i) \
81 for (_i = (_r)->entries; \
82 (void *) (_i) < vstruct_end(&(_r)->field) && (_i)->data_type;\
83 (_i) = replicas_entry_next(_i))
84
85int bch2_sb_replicas_to_cpu_replicas(struct bch_fs *);
86
87extern const struct bch_sb_field_ops bch_sb_field_ops_replicas;
88extern const struct bch_sb_field_ops bch_sb_field_ops_replicas_v0;
89
90void bch2_fs_replicas_exit(struct bch_fs *);
91int bch2_fs_replicas_init(struct bch_fs *);
92
93#endif /* _BCACHEFS_REPLICAS_H */