mds: fix bad EINVAL error code in unlink

diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index ef6af76144a6818c2c7632b8971fe3985153435a..18706b9eb048148c3c20e3d38852babdb87fff96 100644 (file)
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -2838,7 +2838,7 @@ void Server::handle_client_unlink(MDRequest *mdr)
                                 req->get_filepath(), trace, NULL, NULL,
                                 false, MDS_TRAVERSE_FORWARD);
   if (r > 0) return;
-  if (trace.empty()) r = -EINVAL;   // can't unlink root
+  if (r == 0 && trace.empty()) r = -EINVAL;   // can't unlink root
   if (r < 0) {
     reply_request(mdr, r);
     return;