- grrr, they are unsigned ...

lustre/ptlrpc/pinger.c

@@ -132,7 +132,7 @@ static void ptlrpc_pinger_process_import(struct obd_import *imp,
                 imp->imp_force_verify = 0;
         spin_unlock_irqrestore(&imp->imp_lock, flags);
 
-        if ((imp->imp_next_ping - this_ping > 0) &&
+        if (imp->imp_next_ping > this_ping &&
                         (imp->imp_next_ping - this_ping > obd_timeout * HZ)) {
                 CWARN("wrong ping time %lu (current %lu)\n",
                       imp->imp_next_ping, this_ping);