===== drivers/block/ll_rw_blk.c 1.46 vs edited =====
--- 1.46/drivers/block/ll_rw_blk.c	Fri Jul  4 13:35:08 2003
+++ edited/drivers/block/ll_rw_blk.c	Fri Jul 11 08:30:54 2003
@@ -618,7 +618,7 @@
 	do {
 		set_current_state(TASK_UNINTERRUPTIBLE);
 		spin_lock_irq(&io_request_lock);
-		if (blk_oversized_queue(q)) {
+		if (blk_oversized_queue(q) || q->rq.count == 0) {
 			__generic_unplug_device(q);
 			spin_unlock_irq(&io_request_lock);
 			schedule();