On 2022/2/23 11:08 上午, Wang Jianchao wrote: > > > On 2022/2/23 1:19 上午, Tejun Heo wrote: >> 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? > > Hi Tejun > > We just want to provide the flexibility for the user to open/close a policy > per device. If we need to the policy on a device, we needn't to waste cpu sorry, it should be "If we don't need the policy on a device" ;) Thanks Jianchao > cycles and memory for it. > > Thanks > Jianchao
