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.