linux-kernel - [PATCH 3.10 105/123] quota: Properly return errors from dquot_writeback

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Message-Id: <20141112011723.772858819@linuxfoundation.org>
Date:	Wed, 12 Nov 2014 10:17:51 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, Jan Kara <jack@...e.cz>
Subject: [PATCH 3.10 105/123] quota: Properly return errors from dquot_writeback_dquots()

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

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

From: Jan Kara <jack@...e.cz>

commit 474d2605d119479e5aa050f738632e63589d4bb5 upstream.

Due to a switched left and right side of an assignment,
dquot_writeback_dquots() never returned error. This could result in
errors during quota writeback to not be reported to userspace properly.
Fix it.

Coverity-id: 1226884
Signed-off-by: Jan Kara <jack@...e.cz>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/quota/dquot.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -637,7 +637,7 @@ int dquot_writeback_dquots(struct super_
 			dqstats_inc(DQST_LOOKUPS);
 			err = sb->dq_op->write_dquot(dquot);
 			if (!ret && err)
-				err = ret;
+				ret = err;
 			dqput(dquot);
 			spin_lock(&dq_list_lock);
 		}


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