Re: [RFC V4 1/6] blk: prepare to make blk-rq-qos pluggable and modular

[Tejun Heo]

Hello,

On Thu, Feb 17, 2022 at 11:13:44AM +0800, Wang Jianchao (Kuaishou) wrote:
> (3) Add /sys/block/x/queue/qos
>     We can use '+name' or "-name" to open or close the blk-rq-qos
>     policy.

I don't understand why we're modularizing rq-qos in this non-standard way
instead of modprobing to enable a policy and rmmoding to disable. Why are we
building in qos names into the kernel and adding an extra module handling
interface?

Thanks.

-- 
tejun