From: zhong jiang <zhongjiang@huawei.com>
To: <axboe@kernel.dk>, <lars.ellenberg@linbit.com>
Cc: <linux-kernel@vger.kernel.org>
Subject: [PATCH] drivers/block/drbd: remove the null check for kmem_cache_destroy
Date: Wed, 8 Aug 2018 23:22:47 +0800 [thread overview]
Message-ID: <1533741767-13055-1-git-send-email-zhongjiang@huawei.com> (raw)
kmem_cache_destroy has taken null pointer into account. So it is
safe to drop the null check before calling the function.
Signed-off-by: zhong jiang <zhongjiang@huawei.com>
---
drivers/block/drbd/drbd_main.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/block/drbd/drbd_main.c b/drivers/block/drbd/drbd_main.c
index a80809b..ef8212a 100644
--- a/drivers/block/drbd/drbd_main.c
+++ b/drivers/block/drbd/drbd_main.c
@@ -2103,14 +2103,10 @@ static void drbd_destroy_mempools(void)
mempool_exit(&drbd_md_io_page_pool);
mempool_exit(&drbd_ee_mempool);
mempool_exit(&drbd_request_mempool);
- if (drbd_ee_cache)
- kmem_cache_destroy(drbd_ee_cache);
- if (drbd_request_cache)
- kmem_cache_destroy(drbd_request_cache);
- if (drbd_bm_ext_cache)
- kmem_cache_destroy(drbd_bm_ext_cache);
- if (drbd_al_ext_cache)
- kmem_cache_destroy(drbd_al_ext_cache);
+ kmem_cache_destroy(drbd_ee_cache);
+ kmem_cache_destroy(drbd_request_cache);
+ kmem_cache_destroy(drbd_bm_ext_cache);
+ kmem_cache_destroy(drbd_al_ext_cache);
drbd_ee_cache = NULL;
drbd_request_cache = NULL;
--
1.7.12.4
next reply other threads:[~2018-08-08 15:34 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-08 15:22 zhong jiang [this message]
2018-08-08 16:04 ` Jens Axboe
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