From: Liu Bo <bo.li.liu@oracle.com>
Date: Tue, 13 Sep 2016 19:02:27 -0700
Subject: Btrfs: fix memory leak in do_walk_down
Git-commit: a958eab0ed7fdc1b977bc25d3af6efedaa945488
Patch-mainline: v4.9-rc1
References: pulled from 4.4-stable (4.1-stable had expired)

The extent buffer 'next' needs to be free'd conditionally.

Signed-off-by: Liu Bo <bo.li.liu@oracle.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Acked-by: Jeff Mahoney <jeffm@suse.com>
---
 fs/btrfs/extent-tree.c | 1 +
 1 file changed, 1 insertion(+)