Commit 434097ee authored by Chengming Zhou's avatar Chengming Zhou Committed by Jens Axboe
Browse files

blk-mq: support batched queue_rqs() on shared tags queue 



Since active requests have been accounted when allocate driver tags,
we can remove this limit now.

Signed-off-by: default avatarChengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: default avatarMing Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20230913151616.3164338-4-chengming.zhou@linux.dev


Signed-off-by: default avatarJens Axboe <axboe@kernel.dk>
parent 48554df6

block/blk-mq.c

+1 −6
Original line number Diff line number Diff line
@@ -2781,13 +2781,8 @@ void blk_mq_flush_plug_list(struct blk_plug *plug, bool from_schedule) 
		 * If we do, we can dispatch the whole plug list in one go. We

		 * already know at this point that all requests belong to the

		 * same queue, caller must ensure that's the case.

		 *

		 * Since we pass off the full list to the driver at this point,

		 * we do not increment the active request count for the queue.

		 * Bypass shared tags for now because of that.

		 */

		if (q->mq_ops->queue_rqs &&

		    !(rq->mq_hctx->flags & BLK_MQ_F_TAG_QUEUE_SHARED)) {

		if (q->mq_ops->queue_rqs) {

			blk_mq_run_dispatch_ops(q,

				__blk_mq_flush_plug_list(q, plug));

			if (rq_list_empty(plug->mq_list))