Messages in this thread | | | From | Muchun Song <> | Date | Mon, 7 Mar 2022 15:01:12 +0800 | Subject | Re: [PATCH 15/16] mm/migration: fix possible do_pages_stat_array racing with memory offline |
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On Mon, Mar 7, 2022 at 1:22 PM Huang, Ying <ying.huang@intel.com> wrote: > > Miaohe Lin <linmiaohe@huawei.com> 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.
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