When calling bch_set_feature_* routines, it indicates the super block
supports feature set and its version of cache device should at least be
BCACHE_SB_VERSION_CDEV_WITH_FEATURES.
In order to always keep the cache device super block version being
updated, this patch checks whether the super block version is set
correctly when calling bch_set_feature_* routines, if not then set
the version to BCACHE_SB_VERSION_CDEV_WITH_FEATURES.
Signed-off-by: Coly Li <colyli@xxxxxxx>
---
bcache.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/bcache.h b/bcache.h
index 6dcdbb7..46d9683 100644
--- a/bcache.h
+++ b/bcache.h
@@ -228,6 +228,8 @@ static inline int bch_has_feature_##name(struct cache_sb *sb) \
} \
static inline void bch_set_feature_##name(struct cache_sb *sb) \
{ \
+ if ((sb)->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
+ (sb)->version = BCACHE_SB_VERSION_CDEV_WITH_FEATURES; \
(sb)->feature_compat |= \
BCH##_FEATURE_COMPAT_##flagname; \
} \
@@ -245,6 +247,8 @@ static inline int bch_has_feature_##name(struct cache_sb *sb) \
} \
static inline void bch_set_feature_##name(struct cache_sb *sb) \
{ \
+ if ((sb)->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
+ (sb)->version = BCACHE_SB_VERSION_CDEV_WITH_FEATURES; \
(sb)->feature_ro_compat |= \
BCH##_FEATURE_RO_COMPAT_##flagname; \
} \
@@ -262,6 +266,8 @@ static inline int bch_has_feature_##name(struct cache_sb *sb) \
} \
static inline void bch_set_feature_##name(struct cache_sb *sb) \
{ \
+ if ((sb)->version < BCACHE_SB_VERSION_CDEV_WITH_FEATURES) \
+ (sb)->version = BCACHE_SB_VERSION_CDEV_WITH_FEATURES; \
(sb)->feature_incompat |= \
BCH##_FEATURE_INCOMPAT_##flagname; \
} \
--
2.26.2
