linux-kernel - [PATCH 1/1] XFS: Deletion of unnecessary checks before two function calls

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Message-ID: <5479F823.60900@users.sourceforge.net>
Date:	Sat, 29 Nov 2014 17:45:23 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Dave Chinner <david@...morbit.com>, xfs@....sgi.com
CC:	LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org,
	Julia Lawall <julia.lawall@...6.fr>
Subject: [PATCH 1/1] XFS: Deletion of unnecessary checks before two function
 calls

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 29 Nov 2014 17:40:22 +0100

The functions xfs_blkdev_put() and xfs_qm_dqrele() test whether their argument
is NULL and then return immediately.
Thus the test around the call is not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 fs/xfs/xfs_qm.c    | 12 +++++-------
 fs/xfs/xfs_super.c |  3 +--
 2 files changed, 6 insertions(+), 9 deletions(-)

diff --git a/fs/xfs/xfs_qm.c b/fs/xfs/xfs_qm.c
index d68f230..9a4b50a 100644
--- a/fs/xfs/xfs_qm.c
+++ b/fs/xfs/xfs_qm.c
@@ -1749,23 +1749,21 @@ xfs_qm_vop_dqalloc(
 	xfs_iunlock(ip, lockflags);
 	if (O_udqpp)
 		*O_udqpp = uq;
-	else if (uq)
+	else
 		xfs_qm_dqrele(uq);
 	if (O_gdqpp)
 		*O_gdqpp = gq;
-	else if (gq)
+	else
 		xfs_qm_dqrele(gq);
 	if (O_pdqpp)
 		*O_pdqpp = pq;
-	else if (pq)
+	else
 		xfs_qm_dqrele(pq);
 	return 0;
 
 error_rele:
-	if (gq)
-		xfs_qm_dqrele(gq);
-	if (uq)
-		xfs_qm_dqrele(uq);
+	xfs_qm_dqrele(gq);
+	xfs_qm_dqrele(uq);
 	return error;
 }
 
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c
index 206b97f..97eaa25 100644
--- a/fs/xfs/xfs_super.c
+++ b/fs/xfs/xfs_super.c
@@ -796,8 +796,7 @@ xfs_open_devices(
  out_free_ddev_targ:
 	xfs_free_buftarg(mp, mp->m_ddev_targp);
  out_close_rtdev:
-	if (rtdev)
-		xfs_blkdev_put(rtdev);
+	xfs_blkdev_put(rtdev);
  out_close_logdev:
 	if (logdev && logdev != ddev)
 		xfs_blkdev_put(logdev);
-- 
2.1.3

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