linux-kernel - Re: [PATCH] mm: madvise: make MADV

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Message-ID: <5365616a-d4a0-413b-b8d3-ed533063fe37@lucifer.local>
Date: Thu, 15 May 2025 06:30:31 +0100
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Ignacio Moreno Gonzalez <Ignacio.MorenoGonzalez@...a.com>,
        "Liam R. Howlett" <Liam.Howlett@...cle.com>,
        yang@...amperecomputing.com, willy@...radead.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mm: madvise: make MADV_NOHUGEPAGE a no-op if !THP

On Wed, May 14, 2025 at 03:36:48PM -0700, Andrew Morton wrote:
> On Wed, 14 May 2025 17:59:23 +0200 Ignacio Moreno Gonzalez <Ignacio.MorenoGonzalez@...a.com> wrote:
>
> > > Did you want to Iganacio?
> > >
> > > I would suggest chasing up with them to see if they plan to do it or you ought
> > > to do so.
> > >
> > > I can also do it if you need it quick, but I don't want to deprive you of the
> > > opportunity to patch that :)
> >
> > For me it's fine if you create the patch. That will probably be faster ;)
>
> The original patch adds the only direct inclusion of uapi/asm/mman.h
> under include/, which is a big red flag.
>
> I'll drop this version of the patch, thanks.

Yeah this is a case where it is justified, due to circular dependencies.

At any rate this whole thing is a bit of a mess now, so let me liaise with
Ignacio to resend this in a series alongside its now hard-dependency [0] to
ensure correct ordering.

Thanks, Lorenzo

[0]: https://lore.kernel.org/linux-mm/20250514163530.119582-1-lorenzo.stoakes@oracle.com/