linux-kernel - Re: [PATCH v4 2/5] dm: Support I/O priority for dm

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Date:   Tue, 12 Dec 2023 20:57:05 -0800
From:   Eric Biggers <ebiggers@...nel.org>
To:     Hongyu Jin <hongyu.jin.cn@...il.com>
Cc:     agk@...hat.com, snitzer@...nel.org, mpatocka@...hat.com,
        axboe@...nel.dk, zhiguo.niu@...soc.com, ke.wang@...soc.com,
        yibin.ding@...soc.com, hongyu.jin@...soc.com,
        linux-kernel@...r.kernel.org, dm-devel@...ts.linux.dev,
        linux-block@...r.kernel.org
Subject: Re: [PATCH v4 2/5] dm: Support I/O priority for dm_io()

On Tue, Dec 12, 2023 at 07:11:47PM +0800, Hongyu Jin wrote:
> From: Hongyu Jin <hongyu.jin@...soc.com>
> 
> Add ioprio field in struct dm_io_region, by this field
> specific I/O priority when call dm_io().
> 
> Co-developed-by: Yibin Ding <yibin.ding@...soc.com>
> Signed-off-by: Yibin Ding <yibin.ding@...soc.com>
> Signed-off-by: Hongyu Jin <hongyu.jin@...soc.com>

Is struct dm_io_region really the right place for this?  What about
struct dm_io_request?  Or a parameter to dm_io().

- Eric