linux-kernel - Re: [PATCHv2 1/1] block: introduce content activity based ioprio

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Message-ID: <CAGWkznGibmzH8WT9CjC9swWD3pLyCcWnG29eoj=EQk=Qd=kHBg@mail.gmail.com>
Date: Wed, 24 Jan 2024 19:58:44 +0800
From: Zhaoyang Huang <huangzhaoyang@...il.com>
To: Christoph Hellwig <hch@...radead.org>
Cc: "zhaoyang.huang" <zhaoyang.huang@...soc.com>, Jens Axboe <axboe@...nel.dk>, 
	linux-block@...r.kernel.org, linux-kernel@...r.kernel.org, 
	steve.kang@...soc.com
Subject: Re: [PATCHv2 1/1] block: introduce content activity based ioprio

On Wed, Jan 24, 2024 at 5:38 PM Christoph Hellwig <hch@...radead.org> wrote:
>
> The I/O priority can be explicitly set by the submitter, task and
> blkcg arre jut fallbacks.
Yes. I would like to suggest if it is possible to have this commit
work as a hint for promoting the priority since it has been proved in
the verification?
>
> And as said multiple times now bio_add_page must just treat the page
> as a physical address container.  It must never look at MM-internal
> flags.
The alternative way is to iterate the request;s pages in the scheduler
which has been refused by Jens in the previous version. Anyway, we can
find a solution on this.
>