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From: Jens Axboe <axboe@kernel.dk>
To: Bart Van Assche <bvanassche@acm.org>,
	"linux-block@vger.kernel.org" <linux-block@vger.kernel.org>
Subject: Re: [PATCH] null_blk: poll queue support
Date: Mon, 3 May 2021 11:42:36 -0600
Message-ID: <5e0c7e2f-3fe4-7537-98f5-b9c6de8e5c8f@kernel.dk> (raw)
In-Reply-To: <725ea863-c754-addf-f143-71d7e2f273de@acm.org>

On 5/3/21 9:47 AM, Bart Van Assche wrote:
> On 4/17/21 8:29 AM, Jens Axboe wrote:
>> There's currently no way to experiment with polled IO with null_blk,
>> which seems like an oversight. This patch adds support for polled IO.
>> We keep a list of issued IOs on submit, and then process that list
>> when mq_ops->poll() is invoked.
>>
>> A new parameter is added, poll_queues. It defaults to 1 like the
>> submit queues, meaning we'll have 1 poll queue available.
> 
> Has anyone run blktests against blk-for-next since this patch got
> queued? The following appears in the kernel log if I run blktests:

Do you know what parameters the module was loaded with? I'll drop this
one from the 5.13 queue for now.

-- 
Jens Axboe


  reply index

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-17 15:29 Jens Axboe
2021-04-18  4:48 ` Chaitanya Kulkarni
2021-04-18  4:49 ` Chaitanya Kulkarni
2021-04-19 19:48   ` Jens Axboe
2021-04-19 22:19     ` Chaitanya Kulkarni
2021-04-19 22:55       ` Jens Axboe
2021-05-03 15:47 ` Bart Van Assche
2021-05-03 17:42   ` Jens Axboe [this message]
2021-05-04  0:32     ` Bart Van Assche

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