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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 07:25:48PM -0800, Alexei Starovoitov 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 ?

Yes, they are self-contained and don't depend on any patches in the mm tree.

Thanks!

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