linux-ext4 - [PATCH -next] ext4: fix missing unlock on error in ext4_punch

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Message-ID: <CAPgLHd-2_uHg9q_7nQway8uCigH=wgXxiGm9auYDNL_pByzJHA@mail.gmail.com>
Date:	Tue, 18 Jun 2013 11:40:34 +0800
From:	Wei Yongjun <weiyj.lk@...il.com>
To:	tytso@....edu, liwang@...ntukylin.com, adilger.kernel@...ger.ca
Cc:	yongjun_wei@...ndmicro.com.cn, linux-ext4@...r.kernel.org
Subject: [PATCH -next] ext4: fix missing unlock on error in ext4_punch_hole()

From: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>

Add the missing unlock before return from function ext4_punch_hole()
in the error handling case.
Introduced by commit 1cdec9ca46c2c2a7ce452659f43dac64ad5fbc85.
(ext4: Avoid unnecessarily writing back dirty pages before hole punching)

Signed-off-by: Wei Yongjun <yongjun_wei@...ndmicro.com.cn>
---
 fs/ext4/inode.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 2644679..06136b5 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3538,7 +3538,7 @@ int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
 	if (ext4_should_order_data(inode)) {
 		ret = ext4_begin_ordered_punch_hole(inode, offset, length);
 		if (ret)
-			return ret;
+			goto out_mutex;
 	}
 
 	/* Now release the pages and zero block aligned part of pages*/

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