Re: [PATCH v6] mm/hugetlb: ignore hugepage kernel args if hugepages are unsupported

Andrew Morton
2025-12-23T16:54:35Z

On Tue, 23 Dec 2025 06:43:45 -0500 Sasha Levin <sashal@kernel.org> wrote:

> >> > Yes, -stable maintainers have been asked to only backport patches where
> >> > the MM developers asked for that, with cc:stable. There may be
> >> > slipups, but as far as I know this is working.
> >> >
> >> > I don't actually know how they determine which patches need this
> >> > special treatment. Pathname? Signed-off-by:akpm?
> >>
> >> I guess it is pathname, based on ignore_list file [1] of stable-queue repo.
> >>
> >> [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/stable-queue.git/tree/ignore_list#n16
> >>
> >
> >Oh, that's a bit sad.
> >
> >- other trees sometimes mess with mm/ and they probably aren't aware
> > that they need an explicit cc:stable.
> >
> >- misses drivers/block/zram and probably various other things that
> > the MM team maintains.
> >
> >Oh well, I guess simple mm/* coverage is good enough. But I do worry a
> >little that useful fixes coming into mm/ via other trees without
> >cc:stable will get missed.
>
> How should we improve the filter? mm/ AND signed off by akpm?

I think just signed-off-by:akpm please. That way, mm fixes which come
in via other trees without cc:stable get backported.

Obviously we'd prefer that such patches get appropriate consideration
by the MM developers but sometimes other-tree people aren't that
cooperative. In this case it's better to backport the thing rather
than missing a fix?