linux-kernel - [PATCH] btrfs: fix second lock in btrfs_delete_delayed

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Date:	Sat, 4 Aug 2012 15:45:02 +0800
From:	Fengguang Wu <fengguang.wu@...el.com>
To:	Josef Bacik <jbacik@...ionio.com>
Cc:	Chris Mason <chris.mason@...ionio.com>,
	BTRFS FILE SYSTEM <linux-btrfs@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] btrfs: fix second lock in btrfs_delete_delayed_items()

Fix a real bug caught by coccinelle.

fs/btrfs/delayed-inode.c:1013:1-11: second lock on line 1013

Signed-off-by: Fengguang Wu <fengguang.wu@...el.com>
---
 fs/btrfs/delayed-inode.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

--- linux.orig/fs/btrfs/delayed-inode.c	2012-08-03 15:36:21.763560787 +0800
+++ linux/fs/btrfs/delayed-inode.c	2012-08-04 15:37:33.370210331 +0800
@@ -1028,9 +1028,10 @@ do_again:
 		btrfs_release_delayed_item(prev);
 		ret = 0;
 		btrfs_release_path(path);
-		if (curr)
+		if (curr) {
+			mutex_unlock(&node->mutex);
 			goto do_again;
-		else
+		} else
 			goto delete_fail;
 	}
 
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