From: Bart Van Assche <bvanassche@acm.org>
To: Niklas Cassel <Niklas.Cassel@wdc.com>
Cc: Jens Axboe <axboe@kernel.dk>,
"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>,
Christoph Hellwig <hch@lst.de>, Jaegeuk Kim <jaegeuk@kernel.org>,
Adam Manzanares <a.manzanares@samsung.com>,
Damien Le Moal <Damien.LeMoal@wdc.com>,
Hannes Reinecke <hare@suse.de>, Ming Lei <ming.lei@redhat.com>,
Johannes Thumshirn <Johannes.Thumshirn@wdc.com>,
Himanshu Madhani <himanshu.madhani@oracle.com>
Subject: Re: [PATCH v3 16/16] block/mq-deadline: Prioritize high-priority requests
Date: Mon, 23 Aug 2021 10:15:39 -0700 [thread overview]
Message-ID: <b6131780-8b67-8efb-a942-e40b68df082e@acm.org> (raw)
In-Reply-To: <YSNQAu9uXrmEteXc@x1-carbon>
On 8/23/21 12:36 AM, Niklas Cassel wrote:
> I was mainly thinking that it should be possible to do a generic fix,
> such that we eventually won't need a similar fix as yours in all the
> different I/O schedulers.
Coming up with a generic fix would be great but I have not yet found an
elegant approach ...
Another question is what the impact is of scheduler bypass on zoned
block devices? Is the zone locking performed by the mq-deadline
scheduler for writes to zoned block devices compatible with I/O
scheduler bypass?
> However, it does not apply on top of Torvalds master or Jens's for-next
> branch because they both have reverted your cgroup support patch.
>
> If you rebase your fix and send it out, I will be happy to send out
> a Reviewed-by/Tested-by.
I will rebase, retest and resend my patch.
Thanks,
Bart.
next prev parent reply other threads:[~2021-08-23 17:17 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-18 0:44 [PATCH v3 00/16] Improve I/O priority support Bart Van Assche
2021-06-18 0:44 ` [PATCH v3 01/16] block/Kconfig: Make the BLK_WBT and BLK_WBT_MQ entries consecutive Bart Van Assche
2021-06-18 17:09 ` Adam Manzanares
2021-06-18 19:49 ` Himanshu Madhani
2021-06-18 0:44 ` [PATCH v3 02/16] block/blk-cgroup: Swap the blk_throtl_init() and blk_iolatency_init() calls Bart Van Assche
2021-06-18 17:15 ` Adam Manzanares
2021-06-18 19:49 ` Himanshu Madhani
2021-06-21 14:24 ` Tejun Heo
2021-06-18 0:44 ` [PATCH v3 03/16] block/blk-rq-qos: Move a function from a header file into a C file Bart Van Assche
2021-06-18 17:22 ` Adam Manzanares
2021-06-18 19:49 ` Himanshu Madhani
2021-06-18 0:44 ` [PATCH v3 04/16] block: Introduce the ioprio rq-qos policy Bart Van Assche
2021-06-18 22:02 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 05/16] block/mq-deadline: Add several comments Bart Van Assche
2021-06-18 22:06 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 06/16] block/mq-deadline: Add two lockdep_assert_held() statements Bart Van Assche
2021-06-18 22:09 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 07/16] block/mq-deadline: Remove two local variables Bart Van Assche
2021-06-18 22:16 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 08/16] block/mq-deadline: Rename dd_init_queue() and dd_exit_queue() Bart Van Assche
2021-06-18 22:18 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 09/16] block/mq-deadline: Improve compile-time argument checking Bart Van Assche
2021-06-18 22:30 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 10/16] block/mq-deadline: Improve the sysfs show and store macros Bart Van Assche
2021-06-18 23:07 ` Adam Manzanares
2021-06-18 0:44 ` [PATCH v3 11/16] block/mq-deadline: Reserve 25% of scheduler tags for synchronous requests Bart Van Assche
2021-06-18 0:44 ` [PATCH v3 12/16] block/mq-deadline: Micro-optimize the batching algorithm Bart Van Assche
2021-06-18 0:44 ` [PATCH v3 13/16] block/mq-deadline: Add I/O priority support Bart Van Assche
2021-06-18 0:44 ` [PATCH v3 14/16] block/mq-deadline: Track I/O statistics Bart Van Assche
2021-06-18 0:44 ` [PATCH v3 15/16] block/mq-deadline: Add cgroup support Bart Van Assche
2021-06-18 0:44 ` [PATCH v3 16/16] block/mq-deadline: Prioritize high-priority requests Bart Van Assche
2021-08-20 0:45 ` Niklas Cassel
2021-08-20 18:04 ` Bart Van Assche
2021-08-20 23:05 ` Niklas Cassel
2021-08-20 23:38 ` Bart Van Assche
2021-08-23 7:36 ` Niklas Cassel
2021-08-23 17:15 ` Bart Van Assche [this message]
2021-08-23 23:01 ` Damien Le Moal
2021-08-24 21:33 ` Niklas Cassel
2021-06-21 16:06 ` [PATCH v3 00/16] Improve I/O priority support Jens Axboe
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