linux-kernel - [PATCH] ocfs2: Delete unnecessary checks before brelse()

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Message-ID: <55cde320-394b-f985-56ce-1a2abea782aa@web.de>
Date:   Tue, 3 Sep 2019 16:40:53 +0200
From:   Markus Elfring <Markus.Elfring@....de>
To:     ocfs2-devel@....oracle.com, Joel Becker <jlbec@...lplan.org>,
        Joseph Qi <joseph.qi@...ux.alibaba.com>,
        Mark Fasheh <mark@...heh.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        kernel-janitors@...r.kernel.org,
        Andrew Morton <akpm@...ux-foundation.org>,
        Jia-Ju Bai <baijiaju1990@...il.com>,
        Stephen Rothwell <sfr@...b.auug.org.au>
Subject: [PATCH] ocfs2: Delete unnecessary checks before brelse()

From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Tue, 3 Sep 2019 16:33:32 +0200

The brelse() function tests whether its argument is NULL
and then returns immediately.
Thus the tests around the shown calls are not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@...rs.sourceforge.net>
---
 fs/ocfs2/dlmglue.c    | 7 ++-----
 fs/ocfs2/extent_map.c | 3 +--
 2 files changed, 3 insertions(+), 7 deletions(-)

diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index ad594fef2ab0..6e774c5ea13b 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -2508,9 +2508,7 @@ int ocfs2_inode_lock_full_nested(struct inode *inode,
 			ocfs2_inode_unlock(inode, ex);
 	}

-	if (local_bh)
-		brelse(local_bh);
-
+	brelse(local_bh);
 	return status;
 }

@@ -2593,8 +2591,7 @@ int ocfs2_inode_lock_atime(struct inode *inode,
 		*level = 1;
 		if (ocfs2_should_update_atime(inode, vfsmnt))
 			ocfs2_update_inode_atime(inode, bh);
-		if (bh)
-			brelse(bh);
+		brelse(bh);
 	} else
 		*level = 0;

diff --git a/fs/ocfs2/extent_map.c b/fs/ocfs2/extent_map.c
index e66a249fe07c..e3e2d1b2af51 100644
--- a/fs/ocfs2/extent_map.c
+++ b/fs/ocfs2/extent_map.c
@@ -590,8 +590,7 @@ int ocfs2_xattr_get_clusters(struct inode *inode, u32 v_cluster,
 			*extent_flags = rec->e_flags;
 	}
 out:
-	if (eb_bh)
-		brelse(eb_bh);
+	brelse(eb_bh);
 	return ret;
 }

--
2.23.0