blk_queue_plugged  275 block/blk-core.c 	if (blk_queue_plugged(q)) {
blk_queue_plugged  893 block/blk-core.c 	if (!blk_queue_plugged(q)) {
blk_queue_plugged  672 block/elevator.c 	if (unplug_it && blk_queue_plugged(q)) {