From: Christoph Hellwig <hch@lst.de>
To: Jens Axboe <axboe@kernel.dk>
Cc: Ondrej Zary <linux@zary.sk>,
Damien Le Moal <damien.lemoal@opensource.wdc.com>,
Christoph Hellwig <hch@lst.de>, Tim Waugh <tim@cyberelk.net>,
linux-block@vger.kernel.org, linux-parport@lists.infradead.org,
linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] pata_parport: add driver (PARIDE replacement)
Date: Tue, 15 Mar 2022 09:24:57 +0100 [thread overview]
Message-ID: <20220315082457.GB3502@lst.de> (raw)
In-Reply-To: <f8c176d4-74f0-3e4f-446f-2a5f8ace3b28@kernel.dk>
On Mon, Mar 14, 2022 at 02:29:20PM -0600, Jens Axboe wrote:
> The controller would set
>
> ->needs_blocking_queue_rq = true;
>
> or something, and we'd default to false. And if that is set, when the
> blk-mq queue is created, then we'd set BLK_MQ_F_BLOCKING upon creation
> if that flag is true.
>
> That's the block layer side. Then in libata you'd need to ensure that
> you check that same setting and invoke ata_qc_issue() appropriately.
>
> Very top level stuff, there might be more things lurking below. But
> you'll probably find them as you test this stuff...
FYI, this somewhat mistitled series:
https://lore.kernel.org/all/20220308003957.123312-1-michael.christie@oracle.com/
adds BLK_MQ_F_BLOCKING support to the scsi core. Doing libata
should be fairly easy and can built ontop of that.
next prev parent reply other threads:[~2022-03-15 8:25 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-12 14:44 [PATCH] pata_parport: add driver (PARIDE replacement) Ondrej Zary
2022-03-13 19:15 ` Ondrej Zary
2022-03-13 23:19 ` Jens Axboe
2022-03-14 20:25 ` Ondrej Zary
2022-03-14 20:29 ` Jens Axboe
2022-03-15 4:22 ` Damien Le Moal
2022-03-15 18:44 ` Ondrej Zary
2022-03-15 18:47 ` Jens Axboe
2022-03-15 21:17 ` Ondrej Zary
2022-03-16 0:19 ` Damien Le Moal
2022-03-15 8:24 ` Christoph Hellwig [this message]
2022-03-13 20:38 ` Sergey Shtylyov
2022-03-13 21:19 ` Ondrej Zary
2022-03-16 8:50 ` Sergey Shtylyov
2022-03-16 11:28 ` Ondrej Zary
2022-03-16 11:44 ` Damien Le Moal
2022-03-16 12:58 ` Ondrej Zary
2022-10-19 7:34 ` Christoph Hellwig
2022-10-19 18:58 ` Ondrej Zary
2022-11-12 11:17 ` Ondrej Zary
2022-11-13 23:23 ` Damien Le Moal
2022-11-14 7:53 ` Ondrej Zary
2022-11-14 8:03 ` Damien Le Moal
2022-11-14 19:25 ` Ondrej Zary
2022-11-15 3:06 ` Damien Le Moal
2022-11-15 8:04 ` Hannes Reinecke
2022-11-15 14:56 ` Ondrej Zary
2022-11-16 1:30 ` Damien Le Moal
2022-12-12 22:55 ` Ondrej Zary
2022-12-12 23:07 ` Damien Le Moal
2022-12-13 6:22 ` Christoph Hellwig
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