[PATCH 1/2] bcache: Fix undeclared symbol warning for bcache_is_reboot

[Gabriel Shahrouzi <gshahrouzi@gmail.com>]

Add extern declaration for bcache_is_reboot to bcache.h. Ensure proper
visibility for use across multiple files (super.c, sysfs.c) and follow
the declaration pattern for other forward declarations.

Signed-off-by: Gabriel Shahrouzi <gshahrouzi@gmail.com>
---
 drivers/md/bcache/bcache.h | 1 +
 drivers/md/bcache/sysfs.c  | 2 --
 2 files changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/bcache/bcache.h b/drivers/md/bcache/bcache.h
index 785b0d9008fac..531933351b8b8 100644
--- a/drivers/md/bcache/bcache.h
+++ b/drivers/md/bcache/bcache.h
@@ -1007,6 +1007,7 @@ extern struct workqueue_struct *bch_journal_wq;
 extern struct workqueue_struct *bch_flush_wq;
 extern struct mutex bch_register_lock;
 extern struct list_head bch_cache_sets;
+extern bool bcache_is_reboot;
 
 extern const struct kobj_type bch_cached_dev_ktype;
 extern const struct kobj_type bch_flash_dev_ktype;
diff --git a/drivers/md/bcache/sysfs.c b/drivers/md/bcache/sysfs.c
index e8f696cb58c05..47ef0167b9d23 100644
--- a/drivers/md/bcache/sysfs.c
+++ b/drivers/md/bcache/sysfs.c
@@ -17,8 +17,6 @@
 #include <linux/sort.h>
 #include <linux/sched/clock.h>
 
-extern bool bcache_is_reboot;
-
 /* Default is 0 ("writethrough") */
 static const char * const bch_cache_modes[] = {
 	"writethrough",
-- 
2.43.0