linux-kernel - Re: [RFC PATCH] MAINTAINERS: add further core files to mm core section

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Message-ID: <727b5e89-89d7-4abf-a93c-8d6f2cb2c438@redhat.com>
Date: Mon, 16 Jun 2025 23:10:41 +0200
From: David Hildenbrand <david@...hat.com>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 Andrew Morton <akpm@...ux-foundation.org>
Cc: "Liam R . Howlett" <Liam.Howlett@...cle.com>,
 Vlastimil Babka <vbabka@...e.cz>, Mike Rapoport <rppt@...nel.org>,
 Suren Baghdasaryan <surenb@...gle.com>, Michal Hocko <mhocko@...e.com>,
 linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH] MAINTAINERS: add further core files to mm core
 section

On 16.06.25 22:38, Lorenzo Stoakes wrote:
> There are a number of files which don't quite belong anywhere else, so
> place them in the core section. If we determine in future they belong
> elsewhere we can update incrementally but it is preferable that we assign
> each file to a section as best we can.
> 
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
> ---
> REVIEWERS - let me know if these seem appropriate, I'm eyeballing
> this. even if they are not quite best placed a 'best effort' is still
> worthwhile so we establish a place to put all mm files, we can always
> incrementally update these later.
> 
>   MAINTAINERS | 28 ++++++++++++++++++++++++----
>   1 file changed, 24 insertions(+), 4 deletions(-)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 4523a6409186..a61d56bd7aa4 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -15740,10 +15740,6 @@ F:	include/linux/memory_hotplug.h
>   F:	include/linux/memory-tiers.h
>   F:	include/linux/mempolicy.h
>   F:	include/linux/mempool.h
> -F:	include/linux/memremap.h
> -F:	include/linux/mmzone.h
> -F:	include/linux/mmu_notifier.h
> -F:	include/linux/pagewalk.h
>   F:	include/trace/events/ksm.h
>   F:	mm/
>   F:	tools/mm/

Probably better to have some section than none ... was just briefly 
wondering if "CORE" is the right section for some of that. Some of that 
might be better of in a "MM MISC" section, maybe.

> @@ -15764,16 +15760,40 @@ S:	Maintained
>   W:	http://www.linux-mm.org
>   T:	git git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
>   F:	include/linux/memory.h
> +F:	include/linux/memremap.h
>   F:	include/linux/mm.h
>   F:	include/linux/mm_*.h
>   F:	include/linux/mmdebug.h
> +F:	include/linux/mmu_notifier.h
> +F:	include/linux/mmzone.h
>   F:	include/linux/pagewalk.h
>   F:	kernel/fork.c
>   F:	mm/Kconfig
>   F:	mm/debug.c
> +F:	mm/debug_page_ref.c
> +F:	mm/debug_vm_pgtable.c

Wondering if there should be a MM DEBUG section. But then, no idea who 
in their right mind would be willing to maintain that ;)

> +F:	mm/folio-compat.c
> +F:	mm/highmem.c
>   F:	mm/init-mm.c
> +F:	mm/internal.h
> +F:	mm/interval_tree.c
 > +F:	mm/io-mapping.c> +F:	mm/ioremap.c
> +F:	mm/list_lru.c

Smells like reclaim/memcg.

> +F:	mm/maccess.c
 > +F:	mm/mapping_dirty_helpers.c
 >   F:	mm/memory.c> +F:	mm/memremap.c

memory hotplug related. Well, one could argue that it's just a memory 
hotplug user. It's mostly ZONE_DEVICE handling. Wonder if that would be
worth a separate section ...

> +F:	mm/mmu_notifier.c
> +F:	mm/mmzone.c
 > +F:	mm/oom_kill.c

This contains quite some meat. I wonder if a OOM section would be 
appropriate (Michal, I'm looking at you :) )

-- 
Cheers,

David / dhildenb