On Mon, Mar 7, 2022 at 1:22 PM Huang, Ying <ying.huang@xxxxxxxxx> wrote: > > Miaohe Lin <linmiaohe@xxxxxxxxxx> writes: > > > When follow_page peeks a page, the page could be reclaimed under heavy > > memory pressure > > I don't think that memory pressure and reclaiming will be an issue. I think he means a page first to be reclaimed then to be offline could encounter this issue and reclaiming is a precondition. Thanks. > > > and thus be offlined while it's still being used by the > > do_pages_stat_array(). > > "offline" seems a possible problem.