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Date:   Wed, 23 Dec 2020 22:12:15 +0800
From:   Zheng Yongjun <zhengyongjun3@...wei.com>
To:     <colyli@...e.de>, <kent.overstreet@...il.com>,
        <linux-bcache@...r.kernel.org>, <linux-kernel@...r.kernel.org>
CC:     Zheng Yongjun <zhengyongjun3@...wei.com>
Subject: [PATCH -next] md: bcache: use DEFINE_MUTEX (and mutex_init() had been too late)

Signed-off-by: Zheng Yongjun <zhengyongjun3@...wei.com>
---
 drivers/md/bcache/super.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/md/bcache/super.c b/drivers/md/bcache/super.c
index 46a00134a36a..963d62a15f37 100644
--- a/drivers/md/bcache/super.c
+++ b/drivers/md/bcache/super.c
@@ -40,7 +40,7 @@ static const char invalid_uuid[] = {
 };
 
 static struct kobject *bcache_kobj;
-struct mutex bch_register_lock;
+DEFINE_MUTEX(bch_register_lock);
 bool bcache_is_reboot;
 LIST_HEAD(bch_cache_sets);
 static LIST_HEAD(uncached_devices);
@@ -2832,7 +2832,6 @@ static int __init bcache_init(void)
 
 	check_module_parameters();
 
-	mutex_init(&bch_register_lock);
 	init_waitqueue_head(&unregister_wait);
 	register_reboot_notifier(&reboot);
 
-- 
2.22.0

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