linux-kernel - Re: [PATCH] MAINTAINERS: add mm GUP section

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Message-ID: <aBshiBX_N6hhExmS@pc636>
Date: Wed, 7 May 2025 11:02:00 +0200
From: Uladzislau Rezki <urezki@...il.com>
To: David Hildenbrand <david@...hat.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
	Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
	Jason Gunthorpe <jgg@...dia.com>,
	John Hubbard <jhubbard@...dia.com>, Peter Xu <peterx@...hat.com>,
	linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] MAINTAINERS: add mm GUP section

On Wed, May 07, 2025 at 10:05:58AM +0200, David Hildenbrand wrote:
> On 07.05.25 01:21, Andrew Morton wrote:
> > On Tue,  6 May 2025 18:36:01 +0100 Lorenzo Stoakes <lorenzo.stoakes@...cle.com> wrote:
> > 
> > > As part of the ongoing efforts to sub-divide memory management
> > > maintainership and reviewership, establish a section for GUP (Get User
> > > Pages) support and add appropriate maintainers and reviewers.
> > > 
> > 
> > Thanks, I was wondering about that.
> 
> Thanks Lorenzo for driving this!
> 
> Acked-by: David Hildenbrand <david@...hat.com>
> 
> > 
> > (looks at vmscan.c)
> 
> Current maintainers (mm/unstable) on 20 biggest files in mm, Andrew is
> implicit:
> 
>  $ find mm -name "*.c" -type f | xargs wc -l | sort -n -r | head -20
>  198195 total
>    7937 mm/hugetlb.c		# Muchun
>    7881 mm/slub.c		# Christoph/David/Vlastimil
>    7745 mm/vmscan.c		#
>    7424 mm/page_alloc.c		#
>    7166 mm/memory.c		# David
>    5962 mm/shmem.c		# Hugh
>    5553 mm/memcontrol.c		# Johannes/Roman/Shakeel
>    5245 mm/vmalloc.c		#
>    4703 mm/huge_memory.c	# David
>    4538 mm/filemap.c		# Willy
>    3964 mm/swapfile.c		#
>    3871 mm/ksm.c		#
>    3720 mm/gup.c		# David
>    3675 mm/mempolicy.c		#
>    3371 mm/percpu.c		# Dennis/Tejun/Christoph
>    3370 mm/compaction.c		#
>    3197 mm/page-writeback.c	# Willy
>    3097 mm/vma.c		# Liam/Lorenzo
>    2988 mm/rmap.c		# David/Lorenzo
> 
> I've been messing with KSM for a long time, so I could easily jump in as
> maintainer for that. Probably we want page migration (incl. mempolicy?) as a
> separate entry. I've been messing with that as well (and will be messing
> more), so I could jump in for that as well.
> 
> For page allocator stuff (incl. compaction) we at least have plenty of
> reviewers now. For vmalloc we at least have Uladzislau as single reviewer.
> 
> vmscan.c and vmalloc.c really need some love.
> 
As for "vmalloc.c" i can jump in as an extra maintainer aside with
Andrew if no objections.

--
Uladzislau Rezki