Index: linux-2.6.18-rc1/mm/page-writeback.c
===================================================================
--- linux-2.6.18-rc1.orig/mm/page-writeback.c	2006-07-23 00:33:54.247547217 -0700
+++ linux-2.6.18-rc1/mm/page-writeback.c	2006-07-23 00:54:54.495712123 -0700
@@ -239,6 +239,11 @@ static void balance_dirty_pages(struct a
 	if ((laptop_mode && pages_written) ||
 	     (!laptop_mode && (nr_reclaimable > background_thresh)))
 		pdflush_operation(background_writeout, 0);
+
+	if (global_easily_reclaimable() + global_free() < threshold) {
+		/* We can either writeout
+		 * kick kswapd
+	}
 }
 
 /**