Index: linux-2.6.14-ck4/mm/vmscan.c
===================================================================
--- linux-2.6.14-ck4.orig/mm/vmscan.c	2005-11-09 20:58:27.000000000 +1100
+++ linux-2.6.14-ck4/mm/vmscan.c	2005-11-09 20:58:28.000000000 +1100
@@ -892,6 +892,8 @@ static int effective_sc_prio(struct task
 	if (likely(p->mm)) {
 		if (rt_task(p))
 			return -20;
+		if (batch_task(p))
+			return 19;
 		return task_nice(p);
 	}
 	return 0;