linux-kernel - Re: [RFC V4 0/6] blk: make blk-rq-qos policies pluggable and modular

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Message-ID: <ba4065ae-f663-9084-371e-4fdf401ac70b@gmail.com>
Date:   Fri, 18 Feb 2022 11:22:57 +0800
From:   Wang Jianchao <jianchao.wan9@...il.com>
To:     Christoph Hellwig <hch@...radead.org>
Cc:     Jens Axboe <axboe@...nel.dk>, Josef Bacik <jbacik@...com>,
        Tejun Heo <tj@...nel.org>,
        Bart Van Assche <bvanassche@....org>,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC V4 0/6] blk: make blk-rq-qos policies pluggable and modular



On 2022/2/17 4:43 下午, Christoph Hellwig wrote:
> On Thu, Feb 17, 2022 at 11:13:43AM +0800, Wang Jianchao (Kuaishou) wrote:
>> Hi Jens
>>
>> blk-rq-qos is a standalone framework out of io-sched and can be used to
>> control or observe the IO progress in block-layer with hooks. blk-rq-qos
>> is a great design but right now, it is totally fixed and built-in and shut
>> out peoples who want to use it with external module.
> 
> And that's got.  External modules do not matter.
> 
> That being said this series has a bunch of nice cleanups, but we really
> do not need the exports and modular build.

Got it.
I will get rid of the code for supporting external module in next patch.

Thanks
Jianchao