diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index 656ace6..f7ca536 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -239,6 +239,7 @@
 }
 int close_ctree(struct ctree_root *root)
 {
+	commit_transaction(root);
 	drop_cache(root->extent_root);
 	drop_cache(root);
 	BUG_ON(!list_empty(&root->trans));