From mboxrd@z Thu Jan 1 00:00:00 1970 From: SF Markus Elfring Date: Mon, 02 Feb 2015 15:23:18 +0000 Subject: [PATCH 3/3] dm ioctl: Delete an unnecessary check before the function call "dm_table_destroy" Message-Id: <54CF9666.5060407@users.sourceforge.net> List-Id: References: <5307CAA2.8060406@users.sourceforge.net> <530A086E.8010901@users.sourceforge.net> <530A72AA.3000601@users.sourceforge.net> <530B5FB6.6010207@users.sourceforge.net> <530C5E18.1020800@users.sourceforge.net> <530CD2C4.4050903@users.sourceforge.net> <530CF8FF.8080600@users.sourceforge.net> <530DD06F.4090703@users.sourceforge.net> <5317A59D.4@users.so urceforge.net> <54CF93BB.40206@users.sourceforge.net> In-Reply-To: <54CF93BB.40206@users.sourceforge.net> MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Alasdair Kergon , Mike Snitzer , Neil Brown , dm-devel@redhat.com, linux-raid@vger.kernel.org Cc: LKML , kernel-janitors@vger.kernel.org, Julia Lawall From: Markus Elfring Date: Mon, 2 Feb 2015 15:30:37 +0100 The dm_table_destroy() function tests whether its argument is NULL and then returns immediately. Thus the test around the call is not needed. This issue was detected by using the Coccinelle software. Signed-off-by: Markus Elfring --- drivers/md/dm-ioctl.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/drivers/md/dm-ioctl.c b/drivers/md/dm-ioctl.c index 73f791b..4fac6cf 100644 --- a/drivers/md/dm-ioctl.c +++ b/drivers/md/dm-ioctl.c @@ -1053,8 +1053,7 @@ static int do_resume(struct dm_ioctl *param) * Since dm_swap_table synchronizes RCU, nobody should be in * read-side critical section already. */ - if (old_map) - dm_table_destroy(old_map); + dm_table_destroy(old_map); if (!r) __dev_status(md, param); -- 2.2.2