File 0028-bcache-tools-Update-super-block-version-in-bch_set_f.patch of Package bcache-tools

From 9e72a28b0faca4754ebcc1d7030d555120b03be4 Mon Sep 17 00:00:00 2001
From: Coly Li <colyli@suse.de>
Date: Fri, 22 Jan 2021 23:05:07 +0800
Subject: [PATCH] bcache-tools: Update super block version in bch_set_feature_*
 routines
Git-commit: 9e72a28b0faca4754ebcc1d7030d555120b03be4
References: jsc#SLE-9807

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@suse.de>
---
 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