113 строки
3.5 KiB
C
113 строки
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
|
|
#ifndef _BCACHE_FEATURES_H
|
|
#define _BCACHE_FEATURES_H
|
|
|
|
#include <linux/bcache.h>
|
|
#include <linux/kernel.h>
|
|
#include <linux/types.h>
|
|
|
|
#define BCH_FEATURE_COMPAT 0
|
|
#define BCH_FEATURE_RO_COMPAT 1
|
|
#define BCH_FEATURE_INCOMPAT 2
|
|
#define BCH_FEATURE_TYPE_MASK 0x03
|
|
|
|
/* Feature set definition */
|
|
/* Incompat feature set */
|
|
/* 32bit bucket size, obsoleted */
|
|
#define BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET 0x0001
|
|
/* real bucket size is (1 << bucket_size) */
|
|
#define BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE 0x0002
|
|
|
|
#define BCH_FEATURE_COMPAT_SUPP 0
|
|
#define BCH_FEATURE_RO_COMPAT_SUPP 0
|
|
#define BCH_FEATURE_INCOMPAT_SUPP (BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET| \
|
|
BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE)
|
|
|
|
#define BCH_HAS_COMPAT_FEATURE(sb, mask) \
|
|
((sb)->feature_compat & (mask))
|
|
#define BCH_HAS_RO_COMPAT_FEATURE(sb, mask) \
|
|
((sb)->feature_ro_compat & (mask))
|
|
#define BCH_HAS_INCOMPAT_FEATURE(sb, mask) \
|
|
((sb)->feature_incompat & (mask))
|
|
|
|
#define BCH_FEATURE_COMPAT_FUNCS(name, flagname) \
|
|
static inline int bch_has_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
|
|
return 0; \
|
|
return (((sb)->feature_compat & \
|
|
BCH##_FEATURE_COMPAT_##flagname) != 0); \
|
|
} \
|
|
static inline void bch_set_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
(sb)->feature_compat |= \
|
|
BCH##_FEATURE_COMPAT_##flagname; \
|
|
} \
|
|
static inline void bch_clear_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
(sb)->feature_compat &= \
|
|
~BCH##_FEATURE_COMPAT_##flagname; \
|
|
}
|
|
|
|
#define BCH_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
|
|
static inline int bch_has_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
|
|
return 0; \
|
|
return (((sb)->feature_ro_compat & \
|
|
BCH##_FEATURE_RO_COMPAT_##flagname) != 0); \
|
|
} \
|
|
static inline void bch_set_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
(sb)->feature_ro_compat |= \
|
|
BCH##_FEATURE_RO_COMPAT_##flagname; \
|
|
} \
|
|
static inline void bch_clear_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
(sb)->feature_ro_compat &= \
|
|
~BCH##_FEATURE_RO_COMPAT_##flagname; \
|
|
}
|
|
|
|
#define BCH_FEATURE_INCOMPAT_FUNCS(name, flagname) \
|
|
static inline int bch_has_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
|
|
return 0; \
|
|
return (((sb)->feature_incompat & \
|
|
BCH##_FEATURE_INCOMPAT_##flagname) != 0); \
|
|
} \
|
|
static inline void bch_set_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
(sb)->feature_incompat |= \
|
|
BCH##_FEATURE_INCOMPAT_##flagname; \
|
|
} \
|
|
static inline void bch_clear_feature_##name(struct cache_sb *sb) \
|
|
{ \
|
|
(sb)->feature_incompat &= \
|
|
~BCH##_FEATURE_INCOMPAT_##flagname; \
|
|
}
|
|
|
|
BCH_FEATURE_INCOMPAT_FUNCS(obso_large_bucket, OBSO_LARGE_BUCKET);
|
|
BCH_FEATURE_INCOMPAT_FUNCS(large_bucket, LOG_LARGE_BUCKET_SIZE);
|
|
|
|
static inline bool bch_has_unknown_compat_features(struct cache_sb *sb)
|
|
{
|
|
return ((sb->feature_compat & ~BCH_FEATURE_COMPAT_SUPP) != 0);
|
|
}
|
|
|
|
static inline bool bch_has_unknown_ro_compat_features(struct cache_sb *sb)
|
|
{
|
|
return ((sb->feature_ro_compat & ~BCH_FEATURE_RO_COMPAT_SUPP) != 0);
|
|
}
|
|
|
|
static inline bool bch_has_unknown_incompat_features(struct cache_sb *sb)
|
|
{
|
|
return ((sb->feature_incompat & ~BCH_FEATURE_INCOMPAT_SUPP) != 0);
|
|
}
|
|
|
|
int bch_print_cache_set_feature_compat(struct cache_set *c, char *buf, int size);
|
|
int bch_print_cache_set_feature_ro_compat(struct cache_set *c, char *buf, int size);
|
|
int bch_print_cache_set_feature_incompat(struct cache_set *c, char *buf, int size);
|
|
|
|
#endif
|