On Mon, Feb 14, 2022 at 11:08:06PM -0800, Christoph Hellwig wrote: > On Tue, Feb 15, 2022 at 09:10:18AM +0800, Ming Lei wrote: > > The big problem is that rq-qos is only hooked for request based queue, > > and we need to support cgroup/throttle for bio base queue. > > Which bio based driver do we care about? dm/md is usually the upper layer block device for mounting FS, and userspace just setup bio throttle on these dm/md device, so we can't break userspace by removing io throttle for dm/md and other bio based devices. Thanks, Ming
