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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: Chengming Zhou <zhouchengming@bytedance.com>
Reviewed-by: Ming Lei <ming.lei@redhat.com>
Link: https://lore.kernel.org/r/20230913151616.3164338-4-chengming.zhou@linux.dev
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Chengming Zhou 2023-09-13 15:16:14 +00:00 committed by Jens Axboe
parent 48554df6bf
commit 434097ee37
1 changed files with 1 additions and 6 deletions
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7
block/blk-mq.c
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@ -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))