On Tue 26-09-17 17:13:59, Xishi Qiu wrote: > On 2017/9/26 17:02, Michal Hocko wrote: [...] > > This is still very fuzzy. What are you actually trying to achieve? > > I don't expect page fault any more after mlock.
This should be the case normally. Except when mm_populate fails which can happen e.g. when running inside a memcg with the hard limit configured. Is there any other unexpected failure scenario you are seeing? -- Michal Hocko SUSE Labs