From 36a3df5a4574d5ddf59804fcd0c4e9654c514d9a Mon Sep 17 00:00:00 2001 From: Ming Lei Date: Mon, 29 Jun 2020 17:47:59 +0800 Subject: blk-mq: put driver tag when this request is completed It is natural to release driver tag when this request is completed by LLD or device since its purpose is for LLD use. One big benefit is that the released tag can be re-used quicker since bio_endio() may take too long. Meantime we don't need to release driver tag for flush request. Reviewed-by: Christoph Hellwig Signed-off-by: Ming Lei Signed-off-by: Jens Axboe --- block/blk-flush.c | 6 ------ 1 file changed, 6 deletions(-) (limited to 'block/blk-flush.c') diff --git a/block/blk-flush.c b/block/blk-flush.c index 15ae0155ec07..21108a550fbf 100644 --- a/block/blk-flush.c +++ b/block/blk-flush.c @@ -240,7 +240,6 @@ static void flush_end_io(struct request *flush_rq, blk_status_t error) blk_mq_tag_set_rq(hctx, flush_rq->tag, fq->orig_rq); flush_rq->tag = -1; } else { - blk_mq_put_driver_tag(flush_rq); flush_rq->internal_tag = -1; } @@ -341,11 +340,6 @@ static void mq_flush_data_end_io(struct request *rq, blk_status_t error) unsigned long flags; struct blk_flush_queue *fq = blk_get_flush_queue(q, ctx); - if (q->elevator) { - WARN_ON(rq->tag < 0); - blk_mq_put_driver_tag(rq); - } - /* * After populating an empty queue, kick it to avoid stall. Read * the comment in flush_end_io(). -- cgit