Btrfs: avoid BUG when dropping root and reference in same transaction

Commit Message

Sage Weil May 17, 2010, 5:15 p.m. UTC

None

Patch

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 67fa2d2..7cb5041 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -313,7 +313,6 @@  int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 {
 	struct btrfs_path *path;
 	int ret;
-	u32 refs;
 	struct btrfs_root_item *ri;
 	struct extent_buffer *leaf;
 
@@ -327,8 +326,6 @@  int btrfs_del_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
 	leaf = path->nodes[0];
 	ri = btrfs_item_ptr(leaf, path->slots[0], struct btrfs_root_item);
 
-	refs = btrfs_disk_root_refs(leaf, ri);
-	BUG_ON(refs != 0);
 	ret = btrfs_del_item(trans, root, path);
 out:
 	btrfs_free_path(path);