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bcache: unregister reboot notifier if bcache fails to unregister device 

In bcache_init() function it forgot to unregister reboot notifier if
bcache fails to unregister a block device.  This commit fixes this.

Signed-off-by: Zheng Liu <wenqing.lz@taobao.com>
Tested-by: Joshua Schmid <jschmid@suse.com>
Tested-by: Eric Wheeler <bcache@linux.ewheeler.net>
Cc: Kent Overstreet <kmo@daterainc.com>
Cc: stable@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Zheng Liu 2015-11-29 17:21:57 -08:00 committed by Jens Axboe
parent 4d4d8573a8
commit 2ecf0cdb2b
1 changed files with 3 additions and 1 deletions
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4
drivers/md/bcache/super.c
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@ -2071,8 +2071,10 @@ static int __init bcache_init(void)
closure_debug_init(); closure_debug_init();
bcache_major = register_blkdev(0, "bcache"); bcache_major = register_blkdev(0, "bcache");
if (bcache_major < 0) if (bcache_major < 0) {
unregister_reboot_notifier(&reboot);
return bcache_major; return bcache_major;
}
if (!(bcache_wq = create_workqueue("bcache")) || if (!(bcache_wq = create_workqueue("bcache")) ||
!(bcache_kobj = kobject_create_and_add("bcache", fs_kobj)) || !(bcache_kobj = kobject_create_and_add("bcache", fs_kobj)) ||