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    SubjectRe: [PATCH v21 00/19] per memcg lru lock
    On Tue, 5 Jan 2021, Qian Cai wrote:
    > On Tue, 2021-01-05 at 11:42 -0800, Shakeel Butt wrote:
    > > On Tue, Jan 5, 2021 at 11:30 AM Qian Cai <qcai@redhat.com> wrote:
    > > > On Thu, 2020-11-05 at 16:55 +0800, Alex Shi wrote:
    > > > > This version rebase on next/master 20201104, with much of Johannes's
    > > > > Acks and some changes according to Johannes comments. And add a new patch
    > > > > v21-0006-mm-rmap-stop-store-reordering-issue-on-page-mapp.patch to support
    > > > > v21-0007.
    > > > >
    > > > > This patchset followed 2 memcg VM_WARN_ON_ONCE_PAGE patches which were
    > > > > added to -mm tree yesterday.
    > > > >
    > > > > Many thanks for line by line review by Hugh Dickins, Alexander Duyck and
    > > > > Johannes Weiner.
    > > >
    > > > Given the troublesome history of this patchset, and had been put into linux-
    > > > next
    > > > recently, as well as it touched both THP and mlock. Is it a good idea to
    > > > suspect
    > > > this patchset introducing some races and a spontaneous crash with some mlock
    > > > memory presume?
    > >
    > > This has already been merged into the linus tree. Were you able to get
    > > a similar crash on the latest upstream kernel as well?
    >
    > No, I seldom test the mainline those days. Before the vacations, I have tested
    > linux-next up to something like 12/10 which did not include this patchset IIRC
    > and never saw any crash like this. I am still trying to figure out how to
    > reproduce it fast, so I can try a revert to confirm.

    This patchset went into mmotm 2020-11-16-16-23, so probably linux-next
    on 2020-11-17: you'll have had three trouble-free weeks testing with it
    in, so it's not a likely suspect. I haven't looked yet at your report,
    to think of a more likely suspect: will do.

    Hugh

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