linux-kernel - [PATCH 1/1] fs-ext4: Deletion of an unnecessary check before the function call "iput"

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Date:	Sat, 15 Nov 2014 19:19:36 +0100
From:	SF Markus Elfring <elfring@...rs.sourceforge.net>
To:	Andreas Dilger <adilger.kernel@...ger.ca>,
	Theodore Ts'o <tytso@....edu>, linux-ext4@...r.kernel.org
CC:	linux-kernel@...r.kernel.org, kernel-janitors@...r.kernel.org,
	trivial@...nel.org, Coccinelle <cocci@...teme.lip6.fr>
Subject: [PATCH 1/1] fs-ext4: Deletion of an unnecessary check before the
 function call "iput"

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Sat, 15 Nov 2014 19:04:06 +0100

The iput() 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 <elfring@...rs.sourceforge.net>
---
 fs/ext4/mballoc.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/fs/ext4/mballoc.c b/fs/ext4/mballoc.c
index 8b0f9ef..e1a2521 100644
--- a/fs/ext4/mballoc.c
+++ b/fs/ext4/mballoc.c
@@ -2712,8 +2712,7 @@ int ext4_mb_release(struct super_block *sb)
 	}
 	kfree(sbi->s_mb_offsets);
 	kfree(sbi->s_mb_maxs);
-	if (sbi->s_buddy_cache)
-		iput(sbi->s_buddy_cache);
+	iput(sbi->s_buddy_cache);
 	if (sbi->s_mb_stats) {
 		ext4_msg(sb, KERN_INFO,
 		       "mballoc: %u blocks %u reqs (%u success)",
-- 
2.1.3


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