forked from Minki/linux
0df28cad06
For super block version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES, it doesn't make sense to check the feature sets. This patch checks super block version in bch_has_feature_* routines, if the version doesn't have feature sets yet, returns 0 (false) to the caller. Fixes:5342fd4255("bcache: set bcache device into read-only mode for BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET") Fixes:ffa4703275("bcache: add bucket_size_hi into struct cache_sb_disk for large bucket") Cc: stable@vger.kernel.org # 5.9+ Reported-and-tested-by: Bockholdt Arne <a.bockholdt@precitec-optronik.de> Signed-off-by: Coly Li <colyli@suse.de> Signed-off-by: Jens Axboe <axboe@kernel.dk>
113 lines
3.5 KiB
C
113 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
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#ifndef _BCACHE_FEATURES_H
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#define _BCACHE_FEATURES_H
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#include <linux/bcache.h>
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#include <linux/kernel.h>
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#include <linux/types.h>
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#define BCH_FEATURE_COMPAT 0
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#define BCH_FEATURE_RO_COMPAT 1
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#define BCH_FEATURE_INCOMPAT 2
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#define BCH_FEATURE_TYPE_MASK 0x03
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/* Feature set definition */
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/* Incompat feature set */
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/* 32bit bucket size, obsoleted */
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#define BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET 0x0001
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/* real bucket size is (1 << bucket_size) */
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#define BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE 0x0002
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#define BCH_FEATURE_COMPAT_SUPP 0
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#define BCH_FEATURE_RO_COMPAT_SUPP 0
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#define BCH_FEATURE_INCOMPAT_SUPP (BCH_FEATURE_INCOMPAT_OBSO_LARGE_BUCKET| \
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BCH_FEATURE_INCOMPAT_LOG_LARGE_BUCKET_SIZE)
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#define BCH_HAS_COMPAT_FEATURE(sb, mask) \
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((sb)->feature_compat & (mask))
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#define BCH_HAS_RO_COMPAT_FEATURE(sb, mask) \
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((sb)->feature_ro_compat & (mask))
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#define BCH_HAS_INCOMPAT_FEATURE(sb, mask) \
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((sb)->feature_incompat & (mask))
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#define BCH_FEATURE_COMPAT_FUNCS(name, flagname) \
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static inline int bch_has_feature_##name(struct cache_sb *sb) \
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{ \
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if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
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return 0; \
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return (((sb)->feature_compat & \
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BCH##_FEATURE_COMPAT_##flagname) != 0); \
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} \
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static inline void bch_set_feature_##name(struct cache_sb *sb) \
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{ \
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(sb)->feature_compat |= \
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BCH##_FEATURE_COMPAT_##flagname; \
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} \
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static inline void bch_clear_feature_##name(struct cache_sb *sb) \
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{ \
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(sb)->feature_compat &= \
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~BCH##_FEATURE_COMPAT_##flagname; \
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}
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#define BCH_FEATURE_RO_COMPAT_FUNCS(name, flagname) \
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static inline int bch_has_feature_##name(struct cache_sb *sb) \
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{ \
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if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
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return 0; \
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return (((sb)->feature_ro_compat & \
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BCH##_FEATURE_RO_COMPAT_##flagname) != 0); \
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} \
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static inline void bch_set_feature_##name(struct cache_sb *sb) \
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{ \
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(sb)->feature_ro_compat |= \
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BCH##_FEATURE_RO_COMPAT_##flagname; \
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} \
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static inline void bch_clear_feature_##name(struct cache_sb *sb) \
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{ \
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(sb)->feature_ro_compat &= \
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~BCH##_FEATURE_RO_COMPAT_##flagname; \
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}
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#define BCH_FEATURE_INCOMPAT_FUNCS(name, flagname) \
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static inline int bch_has_feature_##name(struct cache_sb *sb) \
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{ \
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if (sb->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
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return 0; \
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return (((sb)->feature_incompat & \
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BCH##_FEATURE_INCOMPAT_##flagname) != 0); \
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} \
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static inline void bch_set_feature_##name(struct cache_sb *sb) \
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{ \
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(sb)->feature_incompat |= \
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BCH##_FEATURE_INCOMPAT_##flagname; \
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} \
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static inline void bch_clear_feature_##name(struct cache_sb *sb) \
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{ \
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(sb)->feature_incompat &= \
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~BCH##_FEATURE_INCOMPAT_##flagname; \
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}
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BCH_FEATURE_INCOMPAT_FUNCS(obso_large_bucket, OBSO_LARGE_BUCKET);
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BCH_FEATURE_INCOMPAT_FUNCS(large_bucket, LOG_LARGE_BUCKET_SIZE);
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static inline bool bch_has_unknown_compat_features(struct cache_sb *sb)
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{
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return ((sb->feature_compat & ~BCH_FEATURE_COMPAT_SUPP) != 0);
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}
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static inline bool bch_has_unknown_ro_compat_features(struct cache_sb *sb)
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{
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return ((sb->feature_ro_compat & ~BCH_FEATURE_RO_COMPAT_SUPP) != 0);
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}
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static inline bool bch_has_unknown_incompat_features(struct cache_sb *sb)
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{
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return ((sb->feature_incompat & ~BCH_FEATURE_INCOMPAT_SUPP) != 0);
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}
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int bch_print_cache_set_feature_compat(struct cache_set *c, char *buf, int size);
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int bch_print_cache_set_feature_ro_compat(struct cache_set *c, char *buf, int size);
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int bch_print_cache_set_feature_incompat(struct cache_set *c, char *buf, int size);
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#endif
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