mds: ENOENT on null dentry in unlink()

diff --git a/src/mds/Server.cc b/src/mds/Server.cc
index 58b2b56be66d8b3d56534b95cf6dd723a7b191db..deb5db6ec2e16ad912fd5f6407f7ad86e39cdca4 100644 (file)
--- a/src/mds/Server.cc
+++ b/src/mds/Server.cc
@@ -3082,7 +3082,6 @@ void Server::handle_client_unlink(MDRequest *mdr)
 
   CDentry *dn = trace[trace.size()-1];
   assert(dn);
-  CDentry::linkage_t *dnl = dn->get_linkage(client);
   
   // is it my dentry?
   if (!dn->is_auth()) {
@@ -3108,6 +3107,12 @@ void Server::handle_client_unlink(MDRequest *mdr)
     return;
   }
 
+  CDentry::linkage_t *dnl = dn->get_linkage(client);
+  if (dnl->is_null()) {
+    reply_request(mdr, -ENOENT);
+    return;
+  }
+
   // dn looks ok.
 
   // get/open inode.