Btrfs: Fixup reference counting on cows

Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/disk-io.h b/fs/btrfs/disk-io.h
index b5dee2f..1c0af7c 100644
--- a/fs/btrfs/disk-io.h
+++ b/fs/btrfs/disk-io.h
@@ -18,9 +18,9 @@
 int write_tree_block(struct ctree_root *root, struct tree_buffer *buf);
 int dirty_tree_block(struct ctree_root *root, struct tree_buffer *buf);
 int clean_tree_block(struct ctree_root *root, struct tree_buffer *buf);
-int commit_transaction(struct ctree_root *root);
+int commit_transaction(struct ctree_root *root, struct ctree_super_block *s);
 struct ctree_root *open_ctree(char *filename, struct ctree_super_block *s);
-int close_ctree(struct ctree_root *root);
+int close_ctree(struct ctree_root *root, struct ctree_super_block *s);
 void tree_block_release(struct ctree_root *root, struct tree_buffer *buf);
 int write_ctree_super(struct ctree_root *root, struct ctree_super_block *s);
 int mkfs(int fd);