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SubjectRe: [PATCH bpf-next v5 01/34] mm: memcontrol: use helpers to read page's memcg data
On Thu, Nov 12, 2020 at 7:40 PM Andrew Morton <akpm@linux-foundation.org> wrote:
>
> On Thu, 12 Nov 2020 19:25:48 -0800 Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:
>
> > On Thu, Nov 12, 2020 at 7:18 PM Andrew Morton <akpm@linux-foundation.org> wrote:
> > >
> > > On Thu, 12 Nov 2020 19:04:56 -0800 Alexei Starovoitov <alexei.starovoitov@gmail.com> wrote:
> > >
> > > > On Thu, Nov 12, 2020 at 04:26:10PM -0800, Roman Gushchin wrote:
> > > > >
> > > > > These patches are not intended to be merged through the bpf tree.
> > > > > They are included into the patchset to make bpf selftests pass and for
> > > > > informational purposes.
> > > > > It's written in the cover letter.
> > > > ...
> > > > > Maybe I had to just list their titles in the cover letter. Idk what's
> > > > > the best option for such cross-subsystem dependencies.
> > > >
> > > > We had several situations in the past releases where dependent patches
> > > > were merged into multiple trees. For that to happen cleanly from git pov
> > > > one of the maintainers need to create a stable branch/tag and let other
> > > > maintainers pull that branch into different trees. This way the sha-s
> > > > stay the same and no conflicts arise during the merge window.
> > > > In this case sounds like the first 4 patches are in mm tree already.
> > > > Is there a branch/tag I can pull to get the first 4 into bpf-next?
> > >
> > > Not really, at present. This is largely by design, although it does cause
> > > this problem once or twice a year.
> > >
> > > These four patches:
> > >
> > > mm-memcontrol-use-helpers-to-read-pages-memcg-data.patch
> > > mm-memcontrol-slab-use-helpers-to-access-slab-pages-memcg_data.patch
> > > mm-introduce-page-memcg-flags.patch
> > > mm-convert-page-kmemcg-type-to-a-page-memcg-flag.patch
> > >
> > > are sufficiently reviewed - please pull them into the bpf tree when
> > > convenient. Once they hit linux-next, I'll drop the -mm copies and the
> > > bpf tree maintainers will then be responsible for whether & when they
> > > get upstream.
> >
> > That's certainly an option if they don't depend on other patches in the mm tree.
> > Roman probably knows best ?
>
> That should be OK. They apply and compile ;)

Awesome. Thank you both for confirming.
Will take them as soon as the rest of the set is reviewed.

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