Linux kernel mirror (for testing)
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1/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2#ifndef _BCACHE_FEATURES_H
3#define _BCACHE_FEATURES_H
4
5#include <linux/bcache.h>
6#include <linux/kernel.h>
7#include <linux/types.h>
8
9#define BCH_FEATURE_COMPAT 0
10#define BCH_FEATURE_RO_COMPAT 1
11#define BCH_FEATURE_INCOMPAT 2
12#define BCH_FEATURE_TYPE_MASK 0x03
13
14/* Feature set definition */
15/* Incompat feature set */
16#define BCH_FEATURE_INCOMPAT_LARGE_BUCKET 0x0001 /* 32bit bucket size */
17
18#define BCH_FEATURE_COMPAT_SUUP 0
19#define BCH_FEATURE_RO_COMPAT_SUUP 0
20#define BCH_FEATURE_INCOMPAT_SUUP BCH_FEATURE_INCOMPAT_LARGE_BUCKET
21
22#define BCH_HAS_COMPAT_FEATURE(sb, mask) \
23 ((sb)->feature_compat & (mask))
24#define BCH_HAS_RO_COMPAT_FEATURE(sb, mask) \
25 ((sb)->feature_ro_compat & (mask))
26#define BCH_HAS_INCOMPAT_FEATURE(sb, mask) \
27 ((sb)->feature_incompat & (mask))
28
29#define BCH_FEATURE_COMPAT_FUNCS(name, flagname) \
30static inline int bch_has_feature_##name(struct cache_sb *sb) \
31{ \
32 return (((sb)->feature_compat & \
33 BCH##_FEATURE_COMPAT_##flagname) != 0); \
34} \
35static inline void bch_set_feature_##name(struct cache_sb *sb) \
36{ \
37 (sb)->feature_compat |= \
38 BCH##_FEATURE_COMPAT_##flagname; \
39} \
40static inline void bch_clear_feature_##name(struct cache_sb *sb) \
41{ \
42 (sb)->feature_compat &= \
43 ~BCH##_FEATURE_COMPAT_##flagname; \
44}
45
46#define BCH_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
47static inline int bch_has_feature_##name(struct cache_sb *sb) \
48{ \
49 return (((sb)->feature_ro_compat & \
50 BCH##_FEATURE_RO_COMPAT_##flagname) != 0); \
51} \
52static inline void bch_set_feature_##name(struct cache_sb *sb) \
53{ \
54 (sb)->feature_ro_compat |= \
55 BCH##_FEATURE_RO_COMPAT_##flagname; \
56} \
57static inline void bch_clear_feature_##name(struct cache_sb *sb) \
58{ \
59 (sb)->feature_ro_compat &= \
60 ~BCH##_FEATURE_RO_COMPAT_##flagname; \
61}
62
63#define BCH_FEATURE_INCOMPAT_FUNCS(name, flagname) \
64static inline int bch_has_feature_##name(struct cache_sb *sb) \
65{ \
66 return (((sb)->feature_incompat & \
67 BCH##_FEATURE_INCOMPAT_##flagname) != 0); \
68} \
69static inline void bch_set_feature_##name(struct cache_sb *sb) \
70{ \
71 (sb)->feature_incompat |= \
72 BCH##_FEATURE_INCOMPAT_##flagname; \
73} \
74static inline void bch_clear_feature_##name(struct cache_sb *sb) \
75{ \
76 (sb)->feature_incompat &= \
77 ~BCH##_FEATURE_INCOMPAT_##flagname; \
78}
79
80BCH_FEATURE_INCOMPAT_FUNCS(large_bucket, LARGE_BUCKET);
81
82int bch_print_cache_set_feature_compat(struct cache_set *c, char *buf, int size);
83int bch_print_cache_set_feature_ro_compat(struct cache_set *c, char *buf, int size);
84int bch_print_cache_set_feature_incompat(struct cache_set *c, char *buf, int size);
85
86#endif