From b48dcf5bffd9521773029dd6448e57c48e03c877 Mon Sep 17 00:00:00 2001
From: "Yan, Zheng" <zheng.yan@oracle.com>
Date: Mon, 31 May 2010 08:58:47 +0000
Subject: [PATCH] --- yaml --- r: 200354 b: refs/heads/master c:
 046f264f6b3b2cf7e5a1769fc92335d8a9316282 h: refs/heads/master v: v3

---
 [refs]                      | 2 +-
 trunk/fs/btrfs/relocation.c | 7 ++++---
 2 files changed, 5 insertions(+), 4 deletions(-)

diff --git a/[refs] b/[refs]
index 6234f2ec9bea..a340ae5fd632 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 058a457ef0ce28d595af53d6103db73332383cbc
+refs/heads/master: 046f264f6b3b2cf7e5a1769fc92335d8a9316282
diff --git a/trunk/fs/btrfs/relocation.c b/trunk/fs/btrfs/relocation.c
index 05d41e569236..b37d723b9d4a 100644
--- a/trunk/fs/btrfs/relocation.c
+++ b/trunk/fs/btrfs/relocation.c
@@ -784,16 +784,17 @@ struct backref_node *build_backref_tree(struct reloc_control *rc,
 				struct btrfs_extent_ref_v0 *ref0;
 				ref0 = btrfs_item_ptr(eb, path1->slots[0],
 						struct btrfs_extent_ref_v0);
-				root = find_tree_root(rc, eb, ref0);
-				if (!root->ref_cows)
-					cur->cowonly = 1;
 				if (key.objectid == key.offset) {
+					root = find_tree_root(rc, eb, ref0);
 					if (root && !should_ignore_root(root))
 						cur->root = root;
 					else
 						list_add(&cur->list, &useless);
 					break;
 				}
+				if (is_cowonly_root(btrfs_ref_root_v0(eb,
+								      ref0)))
+					cur->cowonly = 1;
 			}
 #else
 		BUG_ON(key.type == BTRFS_EXTENT_REF_V0_KEY);