linux-kernel - [PATCH 3.12 091/133] vfs: Remove second variable named error in __dentry

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Message-Id: <20140204210739.606240185@linuxfoundation.org>
Date:	Tue,  4 Feb 2014 13:08:12 -0800
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Waiman Long <Waiman.Long@...com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Al Viro <viro@...iv.linux.org.uk>
Subject: [PATCH 3.12 091/133] vfs: Remove second variable named error in __dentry_path

3.12-stable review patch.  If anyone has any objections, please let me know.

------------------

From: "Eric W. Biederman" <ebiederm@...ssion.com>

commit a8323da0366d3398eda62741d2ac1130c8a172ed upstream.

In commit  232d2d60aa5469bb097f55728f65146bd49c1d25
Author: Waiman Long <Waiman.Long@...com>
Date:   Mon Sep 9 12:18:13 2013 -0400

    dcache: Translating dentry into pathname without taking rename_lock

The __dentry_path locking was changed and the variable error was
intended to be moved outside of the loop.  Unfortunately the inner
declaration of error was not removed. Resulting in a version of
__dentry_path that will never return an error.

Remove the problematic inner declaration of error and allow
__dentry_path to return errors once again.

Cc: Waiman Long <Waiman.Long@...com>
Signed-off-by: "Eric W. Biederman" <ebiederm@...ssion.com>
Signed-off-by: Al Viro <viro@...iv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/dcache.c |    1 -
 1 file changed, 1 deletion(-)

--- a/fs/dcache.c
+++ b/fs/dcache.c
@@ -3140,7 +3140,6 @@ restart:
 	read_seqbegin_or_lock(&rename_lock, &seq);
 	while (!IS_ROOT(dentry)) {
 		struct dentry *parent = dentry->d_parent;
-		int error;

 		prefetch(parent);
 		error = prepend_name(&end, &len, &dentry->d_name);

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