Wang Jianchao (Kuaishou), On 2/15/22 04:36, 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. > > This patchset attempts to make blk-rq-qos framework pluggable and modular. > Then we can update the blk-rq-qos policy module w/o stopping the IO workload. > And it is more convenient to introduce new policy on old machines w/o udgrade > kernel. And we can close all of the blk-rq-qos policy if we needn't any of > them. At the moment, the request_queue.rqos list is empty, we needn't to > waste cpu cyles on them. > > Please write tests in blktests [1] to cover the code that we are changing in this commit. -ck [1] https://github.com/osandov/blktests
