On Mon 15-02-21 18:15:36, Muchun Song wrote: > On Mon, Feb 15, 2021 at 5:47 PM Michal Hocko <mhocko@xxxxxxxx> wrote: > > > > On Sat 13-02-21 01:01:59, Muchun Song wrote: > > > The swap charges the actual number of swap entries on cgroup v2. > > > If a swap cache page is charged successful, and then we uncharge > > > the swap counter. It is wrong on cgroup v2. Because the swap > > > entry is not freed. > > > > Is there any actual problem though? Can you describe the specific > > scenario please? Swap cache charge life time is a bit tricky and I have > > to confess I have to relearn it every time I need to understand it. The > > patch would be much more easier to review if the changelog was much more > > specific. > > I copied the reply to Shakeel here. :-) Not helpful much. I have seen that reply before answering your patch. I really have to say I find it rather annoying to constantly get unclear and cryptic responses from you. This is a subtle area! Make your claims clear and specific so they can be verified. -- Michal Hocko SUSE Labs