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From: Ming Lei <ming.lei@redhat.com>
To: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@kernel.dk>, Keith Busch <kbusch@kernel.org>,
	Sagi Grimberg <sagi@grimberg.me>, Chao Leng <lengchao@huawei.com>,
	linux-nvme@lists.infradead.org, linux-block@vger.kernel.org
Subject: Re: [PATCH 5/8] blk-mq: add tagset quiesce interface
Date: Fri, 21 Oct 2022 09:53:21 +0800	[thread overview]
Message-ID: <Y1H7kVgzvnJ9tFqb@T590> (raw)
In-Reply-To: <20221020105608.1581940-6-hch@lst.de>

On Thu, Oct 20, 2022 at 12:56:05PM +0200, Christoph Hellwig wrote:
> From: Chao Leng <lengchao@huawei.com>
> 
> Drivers that have shared tagsets may need to quiesce potentially a lot
> of request queues that all share a single tagset (e.g. nvme). Add an
> interface to quiesce all the queues on a given tagset. This interface is
> useful because it can speedup the quiesce by doing it in parallel.
> 
> Because some queues should not need to be quiesced(e.g. nvme connect_q)
> when quiesce the tagset. So introduce QUEUE_FLAG_SKIP_TAGSET_QUIESCE to
> tagset quiesce interface to skip the queue.
> 
> Signed-off-by: Chao Leng <lengchao@huawei.com>
> [hch: simplify for the per-tag_set srcu_struct]
> Signed-off-by: Christoph Hellwig <hch@lst.de>

Reviewed-by: Ming Lei <ming.lei@redhat.com>

Thanks,
Ming


  parent reply	other threads:[~2022-10-21  1:53 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2022-10-20 10:56 per-tagset SRCU struct and quiesce Christoph Hellwig
2022-10-20 10:56 ` [PATCH 1/8] block: set the disk capacity to 0 in blk_mark_disk_dead Christoph Hellwig
2022-10-20 13:16   ` Sagi Grimberg
2022-10-21  1:09   ` Ming Lei
2022-10-21 13:11     ` Christoph Hellwig
2022-10-21  1:53   ` Chao Leng
2022-10-21  6:49   ` Hannes Reinecke
2022-10-21 13:13     ` Christoph Hellwig
2022-10-21 21:12   ` Bart Van Assche
2022-10-20 10:56 ` [PATCH 2/8] blk-mq: skip non-mq queues in blk_mq_quiesce_queue Christoph Hellwig
2022-10-20 13:16   ` Sagi Grimberg
2022-10-21  1:13   ` Ming Lei
2022-10-21 13:19     ` Christoph Hellwig
2022-10-21 15:08       ` Ming Lei
2022-10-21  2:47   ` Chao Leng
2022-10-21  3:16     ` Chao Leng
2022-10-21  6:49   ` Hannes Reinecke
2022-10-20 10:56 ` [PATCH 3/8] blk-mq: move the srcu_struct used for quiescing to the tagset Christoph Hellwig
2022-10-20 13:23   ` Sagi Grimberg
2022-10-20 17:26   ` Keith Busch
2022-10-21 13:20     ` Christoph Hellwig
2022-10-21  1:41   ` Ming Lei
2022-10-21  2:49   ` Chao Leng
2022-10-21  6:50   ` Hannes Reinecke
2022-10-21  7:16   ` Chao Leng
2022-10-21 13:22     ` Christoph Hellwig
2022-10-20 10:56 ` [PATCH 4/8] blk-mq: pass a tagset to blk_mq_wait_quiesce_done Christoph Hellwig
2022-10-20 13:23   ` Sagi Grimberg
2022-10-21  1:46   ` Ming Lei
2022-10-21 13:23     ` Christoph Hellwig
2022-10-21  2:49   ` Chao Leng
2022-10-21  6:50   ` Hannes Reinecke
2022-10-21 21:18   ` Bart Van Assche
2022-10-20 10:56 ` [PATCH 5/8] blk-mq: add tagset quiesce interface Christoph Hellwig
2022-10-20 13:24   ` Sagi Grimberg
2022-10-21  1:53   ` Ming Lei [this message]
2022-10-21  2:49   ` Chao Leng
2022-10-21  6:51   ` Hannes Reinecke
2022-10-21 21:22   ` Bart Van Assche
2022-10-24  1:57     ` Chao Leng
2022-10-24 13:35       ` Bart Van Assche
2022-10-25  1:38         ` Chao Leng
2022-10-20 10:56 ` [PATCH 6/8] nvme: move the NS_DEAD flag to the controller Christoph Hellwig
2022-10-20 13:30   ` Sagi Grimberg
2022-10-21 13:28     ` Christoph Hellwig
2022-10-24  8:43       ` Sagi Grimberg
2022-10-24  8:50         ` Sagi Grimberg
2022-10-21  2:49   ` Chao Leng
2022-10-21  6:51   ` Hannes Reinecke
2022-10-20 10:56 ` [PATCH 7/8] nvme: remove nvme_set_queue_dying Christoph Hellwig
2022-10-20 13:10   ` Sagi Grimberg
2022-10-21 13:29     ` Christoph Hellwig
2022-10-24  8:48       ` Sagi Grimberg
2022-10-21  2:50   ` Chao Leng
2022-10-21  6:52   ` Hannes Reinecke
2022-10-20 10:56 ` [PATCH 8/8] nvme: use blk_mq_[un]quiesce_tagset Christoph Hellwig
2022-10-20 13:35   ` Sagi Grimberg
2022-10-21  2:50   ` Chao Leng
2022-10-21  6:52   ` Hannes Reinecke
2022-10-20 13:16 ` per-tagset SRCU struct and quiesce Sagi Grimberg
2022-10-21 18:06 ` Keith Busch

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