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SubjectRe: [Resend PATCH 1/6] mm/memcg: warning on !memcg after readahead page charged
On Mon 24-08-20 10:52:02, Qian Cai wrote:
> On Thu, Aug 20, 2020 at 10:58:50AM -0400, Qian Cai wrote:
> > On Tue, Aug 11, 2020 at 07:10:27PM +0800, Alex Shi wrote:
> > > Since readahead page is charged on memcg too, in theory we don't have to
> > > check this exception now. Before safely remove them all, add a warning
> > > for the unexpected !memcg.
> > >
> > > Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
> > > Acked-by: Michal Hocko <mhocko@suse.com>
> >
> > This will trigger,
>
> Andrew, Stephen, can you drop this series for now? I did manage to trigger this
> warning on all arches, powerpc, x86 and arm64 (below).

Yes, I do agree. See http://lkml.kernel.org/r/20200824151013.GB3415@dhcp22.suse.cz
--
Michal Hocko
SUSE Labs

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