Build provider 3rd arg from smb_request_t
hacking...

@@ -210,12 +210,11 @@
                         op->op_oplock_level = SMB_OPLOCK_BATCH;
                 else
                         op->op_oplock_level = SMB_OPLOCK_EXCLUSIVE;
         }
 
-        DTRACE_SMB_2(op__NtCreateX__start, smb_request_t *, sr,
-            struct open_param *, op);
+        DTRACE_SMB_1(op__NtCreateX__start, smb_request_t *, sr); /* arg.open */
 
         return ((rc == 0) ? SDRC_SUCCESS : SDRC_ERROR);
 }
 
 void