From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Wed, 4 Jul 2012 14:15:02 +0000 (-0600)
Subject: Btrfs: fix buffer leak in btrfs_next_old_leaf
X-Git-Tag: v3.6-rc1~81^2~17
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=e6466e354a5c23717325adecf387f93be4b9c830;p=thirdparty%2Fkernel%2Flinux.git

Btrfs: fix buffer leak in btrfs_next_old_leaf

When calling btrfs_next_old_leaf, we were leaking an extent buffer in the
rare case of using the deadlock avoidance code needed for the tree mod log.

Signed-off-by: Jan Schmidt <list.btrfs@jan-o-sch.net>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---

diff --git a/fs/btrfs/ctree.c b/fs/btrfs/ctree.c
index 8206b3900587e..67fe46fdee6f9 100644
--- a/fs/btrfs/ctree.c
+++ b/fs/btrfs/ctree.c
@@ -5127,6 +5127,7 @@ again:
 				 * locked. To solve this situation, we give up
 				 * on our lock and cycle.
 				 */
+				free_extent_buffer(next);
 				btrfs_release_path(path);
 				cond_resched();
 				goto again;