On Tue 17-03-20 08:00:55, Minchan Kim wrote: > On Tue, Mar 17, 2020 at 08:12:39AM +0100, Michal Hocko wrote: [...] > > Just to make it clear, are you really suggesting to special case > > page_check_references for madvise path? > > > > No, (page_mapcount() > 1) checks *effectively* fixes the performance > bug as well as vulnerability issue. Ahh, ok then we are on the same page. You were replying to the part where I have pointed out that you can control aging by these calls and your response suggested that this is somehow undesirable behavior or even a bug. -- Michal Hocko SUSE Labs
