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From: Christoph Hellwig <hch@infradead.org>
To: Ming Lei <ming.lei@redhat.com>
Cc: Christoph Hellwig <hch@infradead.org>,
	Jens Axboe <axboe@kernel.dk>,
	linux-block@vger.kernel.org, Sagi Grimberg <sagi@grimberg.me>,
	Baolin Wang <baolin.wang7@gmail.com>
Subject: Re: [PATCH V6 6/6] blk-mq: support batching dispatch in case of io scheduler
Date: Tue, 30 Jun 2020 05:55:37 +0100
Message-ID: <20200630045537.GA17653@infradead.org> (raw)
In-Reply-To: <20200629103239.GB1881343@T590>

On Mon, Jun 29, 2020 at 06:32:39PM +0800, Ming Lei wrote:
> 
> > list back onto the main list here, otherwise we can lose those requests.
> 
> The dispatch list always becomes empty after blk_mq_dispatch_rq_list()
> returns, so no need to splice it back.

Oh, true - it moves everyting to the dispatch list eventually.

      parent reply index

Thread overview: 14+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-24 23:03 [PATCH V6 0/6] blk-mq: support batching dispatch from scheduler Ming Lei
2020-06-24 23:03 ` [PATCH V6 1/6] blk-mq: pass request queue into get/put budget callback Ming Lei
2020-06-24 23:03 ` [PATCH V6 2/6] blk-mq: pass hctx to blk_mq_dispatch_rq_list Ming Lei
2020-06-24 23:03 ` [PATCH V6 3/6] blk-mq: move getting driver tag and budget into one helper Ming Lei
2020-06-24 23:03 ` [PATCH V6 4/6] blk-mq: remove dead check from blk_mq_dispatch_rq_list Ming Lei
2020-06-25  7:42   ` Johannes Thumshirn
2020-06-24 23:03 ` [PATCH V6 5/6] blk-mq: pass obtained budget count to blk_mq_dispatch_rq_list Ming Lei
2020-06-29  8:11   ` Christoph Hellwig
2020-06-24 23:03 ` [PATCH V6 6/6] blk-mq: support batching dispatch in case of io scheduler Ming Lei
2020-06-29  9:04   ` Christoph Hellwig
2020-06-29 10:32     ` Ming Lei
2020-06-30  0:57       ` Ming Lei
2020-06-30  4:56         ` Christoph Hellwig
2020-06-30  4:55       ` Christoph Hellwig [this message]

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