Index: linux-2.6/block/ll_rw_blk.c
===================================================================
--- linux-2.6.orig/block/ll_rw_blk.c	2006-12-19 17:35:00.000000000 +1100
+++ linux-2.6/block/ll_rw_blk.c	2006-12-19 17:35:53.000000000 +1100
@@ -226,6 +226,8 @@ void blk_queue_make_request(request_queu
 	q->unplug_delay = (3 * HZ) / 1000;	/* 3 milliseconds */
 	if (q->unplug_delay == 0)
 		q->unplug_delay = 1;
+	q->unplug_delay = 0;
+	q->unplug_thresh = 0;
 
 	INIT_WORK(&q->unplug_work, blk_unplug_work, q);