7203 unlinking a directory on tmpfs does not remove the directory entries
Reviewed by: Robert Mustacchi <rm@joyent.com>
Reviewed by: Alexander Stetsenko <astetsenko@racktopsystems.com>

*** 25,34 ****
--- 25,35 ----
   */
  
  /*
   * Copyright (c) 2015, Joyent, Inc. All rights reserved.
   * Copyright 2015 Nexenta Systems, Inc.  All rights reserved.
+  * Copyright 2016 RackTop Systems.
   */
  
  #include <sys/types.h>
  #include <sys/param.h>
  #include <sys/t_lock.h>
*** 1102,1112 ****
          rw_enter(&parent->tn_rwlock, RW_WRITER);
          rw_enter(&tp->tn_rwlock, RW_WRITER);
  
          if (tp->tn_type != VDIR ||
              (error = secpolicy_fs_linkdir(cred, dvp->v_vfsp)) == 0)
!                 error = tdirdelete(parent, tp, nm, DR_REMOVE, cred);
  
          rw_exit(&tp->tn_rwlock);
          rw_exit(&parent->tn_rwlock);
          vnevent_remove(TNTOV(tp), dvp, nm, ct);
          tmpnode_rele(tp);
--- 1103,1114 ----
          rw_enter(&parent->tn_rwlock, RW_WRITER);
          rw_enter(&tp->tn_rwlock, RW_WRITER);
  
          if (tp->tn_type != VDIR ||
              (error = secpolicy_fs_linkdir(cred, dvp->v_vfsp)) == 0)
!                 error = tdirdelete(parent, tp, nm, tp->tn_type == VDIR ?
!                     DR_RMDIR : DR_REMOVE, cred);
  
          rw_exit(&tp->tn_rwlock);
          rw_exit(&parent->tn_rwlock);
          vnevent_remove(TNTOV(tp), dvp, nm, ct);
          tmpnode_rele(tp);