On Tue 04-09-18 10:00:36, Jerome Glisse wrote: > On Mon, Sep 03, 2018 at 07:56:54AM +0200, Michal Hocko wrote: [...] > > And THP migration is still a problem with 4.4 AFAICS. All other cases > > simply split the huge page but THP migration keeps it in one piece and > > as such it is theoretically broken as you have explained. So I would > > stick with what I posted with some more clarifications in the changelog > > if you think it is appropriate (suggestions welcome). > > Reading code there is no THP migration in 4.4 only huge tlb migration. Meh, you are right. For some reason I misread unmap_and_move_huge_page to be also for THP. Sorry for the conusion. My fault! Then it would be indeed safer to use your backport. -- Michal Hocko SUSE Labs
