Re: [PATCH v3 1/3] mm: memcg: fix stale protection of reclaim target memcg

[Yosry Ahmed]

On Fri, Dec 2, 2022 at 4:35 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:
>
> On Fri, 2 Dec 2022 16:26:05 -0800 Yosry Ahmed <yosryahmed@xxxxxxxxxx> wrote:
>
> > Andrew, does this need to be picked up by stable branches?
>
> Does it?  The changelog doesn't have a clear description of the
> user-visible effects of the flaw, which is the guiding light for a
> backport?
>
>

There are 2 example scenarios in the changelog that misbehave without
this fix, cases where the protection of a memcg that is the target of
reclaim is not ignored as it should be.

I would think that it needs to be backported to stable releases,
unless Roman or any of the other memcg maintainers disagrees.