On Tue 03-03-20 15:49:41, Shakeel Butt wrote: > On Tue, Mar 3, 2020 at 1:32 AM Michal Hocko <mhocko@xxxxxxxxxx> wrote: [...] > > Could you be more specific about the swap in case please? > > > > With swap accounting enabled, if the memcg of the swapped out page is > not online then the memcg extracted from the given 'mm' will be > charged and if 'mm' is NULL then root memcg will be charged. However I > could not find a code path where the given 'mm' will be NULL for > swap-in case. Yes, this is my understanding as well. All the paths are getting mm from a vma AFAICS. This is a valuable information for the changelog. -- Michal Hocko SUSE Labs
