BLK_MQ_UNIQUE_TAG_MASK  559 block/blk-mq-tag.c 		(rq->tag & BLK_MQ_UNIQUE_TAG_MASK);
BLK_MQ_UNIQUE_TAG_MASK  289 include/linux/blk-mq.h 	BLK_MQ_UNIQUE_TAG_MASK = (1 << BLK_MQ_UNIQUE_TAG_BITS) - 1,