On Fri, Nov 26, 2021 at 03:47:24PM +0100, Michal Koutný wrote: > The question here is how long would stay the offlined blkcgs around if > they were directly pinned upon the IO submission. If it's unbound, then > reparenting makes more sense. It should be fine to pin whatever's necessary while related IOs are in flight and percpu_ref used for css refcnting isn't gonna make any noticeable difference in terms of overhead. Thanks. -- tejun
