From e6e072805164fcba2a9c690ddef79e7224e0b6dd Mon Sep 17 00:00:00 2001
From: Jan Schmidt <list.btrfs@jan-o-sch.net>
Date: Wed, 27 Jun 2012 15:23:09 +0200
Subject: [PATCH] --- yaml --- r: 311651 b: refs/heads/master c:
 9345457f4a539a40056431aeb6f068750857472f h: refs/heads/master i:   311649:
 ab541edb5f40706893b1ef545dbc970c56ca8b90   311647:
 5fd51f3816b6616e3a3aff8a9824f04482536ae5 v: v3

---
 [refs]                   |  2 +-
 trunk/fs/btrfs/backref.c | 12 ++++++++----
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/[refs] b/[refs]
index 591f09b6e7d4..367b3bf2e16b 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 8ca78f3eda4bf1799e8c4ba02035623fd7a347df
+refs/heads/master: 9345457f4a539a40056431aeb6f068750857472f
diff --git a/trunk/fs/btrfs/backref.c b/trunk/fs/btrfs/backref.c
index 7301cdb4b2cb..cf0df904347f 100644
--- a/trunk/fs/btrfs/backref.c
+++ b/trunk/fs/btrfs/backref.c
@@ -301,10 +301,14 @@ static int __resolve_indirect_ref(struct btrfs_fs_info *fs_info,
 		goto out;
 
 	eb = path->nodes[level];
-	if (!eb) {
-		WARN_ON(1);
-		ret = 1;
-		goto out;
+	while (!eb) {
+		if (!level) {
+			WARN_ON(1);
+			ret = 1;
+			goto out;
+		}
+		level--;
+		eb = path->nodes[level];
 	}
 
 	ret = add_all_parents(root, path, parents, level, &ref->key_for_search,