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Date: Mon, 12 Oct 2026 20:25:32 -0700
From: Andrew Morton <akpm@linux-foundation.org>
To: Muchun Song <muchun.song@linux.dev>
Cc: "Jose A. Perez de Azpillaga" <azpijr@gmail.com>, Muchun Song
 <songmuchun@bytedance.com>, David Hildenbrand <david@kernel.org>, Oscar
 Salvador <osalvador@suse.de>, Dave Hansen <dave.hansen@intel.com>, Paul
 Walmsley <pjw@kernel.org>, Palmer Dabbelt <palmer@dabbelt.com>, Albert Ou
 <aou@eecs.berkeley.edu>, Alexandre Ghiti <alex@ghiti.fr>,
 =?ISO-8859-1?Q?Bj=F6rn_T=F6pel?= <bjorn@rivosinc.com>, Catalin Marinas
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 Gordeev <agordeev@linux.ibm.com>, Alistair Popple <apopple@nvidia.com>,
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 linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
 stable@vger.kernel.org
Subject: Re: [PATCH v2 1/4] mm: fix missing page-table destructor in
 pagetable_free()
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On Tue, 13 Oct 2026 10:50:21 +0800 Muchun Song <muchun.song@linux.dev> wrote:

> >> The correct trailer is:
> >> 
> >> Cc: <stable@vger.kernel.org> # 6.16-6.18: bf9e4e30f353: x86/mm: use pagetable_free()
> >> 
> >> Andrew, would you be able to update the trailer in the patch when you
> >> pick it up? If there are further review comments that require code
> >> changes, I'll fix this trailer as part of the v3 respin. Thanks a lot!
> > 
> > I don't know if/how the -stable maintainers handle a comment like that.
> > I expect it's more reliable to do this via Fixes:.  Possible?
> > 
> 
> Thanks. I used this format because it is explicitly documented by the
> stable kernel rules.
> 
> The shell-style comment is the format documented in
> Documentation/process/stable-kernel-rules.rst for specifying additional
> patch prerequisites:
> 
>   Cc: <stable@vger.kernel.org> # 3.3.x: <commit>: <subject>
>   Cc: <stable@vger.kernel.org> # 3.3.x
> 
> See:
> 
>   https://docs.kernel.org/process/stable-kernel-rules.html#option-1

Oh.  Consider me educated.  Edited.

> A Fixes tag alone cannot express this dependency. It does not specify
> an additional commit that must be cherry-picked first. The documented
> Cc comment provides both the prerequisite and the required cherry-pick
> order.
> 
> Would this be sufficient for the stable team to pick up the prerequisite?

Hopefully.  I suggest you double-check when you get the emails as these
are applied to the various stable trees.