From: Filipe David Borba Manana <fdmanana@gmail.com>
Date: Sat, 12 Oct 2013 19:32:59 +0000 (+0100)
Subject: Btrfs: don't leak delayed node on path allocation failure
X-Git-Tag: v3.13-rc3~10^2~67
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3c77bd94ecb4ad2653d1e3eb22295018533a1e21;p=platform%2Fkernel%2Flinux-exynos.git

Btrfs: don't leak delayed node on path allocation failure

If the path allocation failed, we would return without decrementing
the reference count in the delayed node we got before, resulting
in a leak.

Signed-off-by: Filipe David Borba Manana <fdmanana@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>
---

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index cbd9523..df1a496 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -1174,8 +1174,10 @@ int btrfs_commit_inode_delayed_items(struct btrfs_trans_handle *trans,
 	mutex_unlock(&delayed_node->mutex);
 
 	path = btrfs_alloc_path();
-	if (!path)
+	if (!path) {
+		btrfs_release_delayed_node(delayed_node);
 		return -ENOMEM;
+	}
 	path->leave_spinning = 1;
 
 	block_rsv = trans->block_rsv;