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

Andrew Morton
2025-12-23T02:30:56Z

On Mon, 22 Dec 2025 17:30:44 -0800 SeongJae Park <sj@kernel.org> wrote:

> On Sun, 21 Dec 2025 10:49:07 -0800 Andrew Morton <akpm@linux-foundation.org> wrote:
>
> > On Sun, 21 Dec 2025 10:22:44 +0100 "David Hildenbrand (Red Hat)" <david@kernel.org> wrote:
> >
> > > >
> > > > My main concern was -
> > > > A fixes tag means it might get auto backported to stable kernels too,
> > >
> > > Not in the MM world -- IIRC. I think there is the agreement, that we
> > > decide what should go into stable and what not.
> > >
> > > Andrew can correct me if my memory is wrong.
> >
> > 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.