bcache: do not check NULL pointer before calling kmem_cache_destroy

kmem_cache_destroy() is safe for NULL pointer as input, the NULL pointer
checking is unncessary. This patch just removes the NULL pointer checking
to make code simpler.

Signed-off-by: Coly Li <colyli@suse.de>
Reviewed-by: Shenghui Wang <shhuiw@foxmail.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

diff --git a/drivers/md/bcache/request.c b/drivers/md/bcache/request.c
index 55264e71369da0b088987e1f74d5f4cd778bfa53..51be355a3309fe993e4e14c0c5ac8d3e9955b45c 100644 (file)
--- a/drivers/md/bcache/request.c
+++ b/drivers/md/bcache/request.c
@@ -1367,8 +1367,7 @@ void bch_flash_dev_request_init(struct bcache_device *d)
 
 void bch_request_exit(void)
 {
-       if (bch_search_cache)
-               kmem_cache_destroy(bch_search_cache);
+       kmem_cache_destroy(bch_search_cache);
 }
 
 int __init bch_request_init(void)