Re: [PATCH 2/7] MAINTAINERS: TMPFS (SHMEM FILESYSTEM) updates

["Lorenzo Stoakes (ARM)" <ljs@kernel.org>]

On Fri, Oct 30, 2026 at 10:34:26PM +0100, David Hildenbrand (Arm) wrote:
> I am not really the best shmem/tmpfs/memfd expert around, but it should
> be good enough to judge when something is ready to be picked up, to then
> pick it up. I'll have to heavily rely on Hugh and Baolin on judgment
> for the more involved and more controversial bits.
>
> Rename "TMPFS (SHMEM FILESYSTEM)" to "MEMORY MANAGEMENT - SHARED MEMORY
> (SHMEM/TMPFS/MEMFD)" and move it accordingly. Add myself as a MAINTAINER
> so people know whom to CC.
>
> Add mm/core.git as the target git tree. Once shmem becomes a high volume
> component we can dedicate it a separate tree and have dedicated people
> pick it up.
>
> While at it, add some more shmem/tmpfs/memfd related files+directories
> we missed so far.
>
> There is also "kernel/pid_sysctl.h", which includes some of the pid
> namespaced sysctl vm.memfd_noexec. But that's really more of a proc/
> namespace thingy, so it's not a good fit here.

Maybe not for shmem, but there's definitely still some stuff in kernel/ that
should be ported over to mm/ (thinking particularly of fork stuff).

>
> Signed-off-by: David Hildenbrand (Arm) <david@kernel.org>

Acked-by: Lorenzo Stoakes (ARM) <ljs@kernel.org>

> ---
>  MAINTAINERS | 30 +++++++++++++++++++-----------
>  1 file changed, 19 insertions(+), 11 deletions(-)
>
> diff --git a/MAINTAINERS b/MAINTAINERS
> index dbb5582ec1c74..0baeb37b0dcdc 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -17772,6 +17772,25 @@ S:	Maintained
>  F:	include/linux/secretmem.h
>  F:	mm/secretmem.c
>
> +MEMORY MANAGEMENT - SHARED MEMORY (SHMEM/TMPFS/MEMFD)
> +M:	Hugh Dickins <hughd@google.com>
> +M:	David Hildenbrand <david@kernel.org>
> +R:	Baolin Wang <baolin.wang@linux.alibaba.com>
> +L:	linux-mm@kvack.org
> +S:	Maintained
> +T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mm/core.git for-next
> +F:	Documentation/filesystems/tmpfs.rst
> +F:	Documentation/mm/shmfs.rst
> +F:	Documentation/userspace-api/mfd_noexec.rst
> +F:	include/linux/memfd.h
> +F:	include/linux/shmem_fs.h
> +F:	include/uapi/linux/memfd.h
> +F:	mm/memfd.c
> +F:	mm/shmem.c
> +F:	mm/shmem_quota.c
> +F:	tools/testing/selftests/memfd/
> +F:	tools/testing/selftests/tmpfs/
> +
>  MEMORY MANAGEMENT - SWAP
>  M:	Andrew Morton <akpm@linux-foundation.org>
>  M:	Chris Li <chrisl@kernel.org>
> @@ -28202,17 +28221,6 @@ S:	Maintained
>  F:	Documentation/hwmon/tmp513.rst
>  F:	drivers/hwmon/tmp513.c
>
> -TMPFS (SHMEM FILESYSTEM)
> -M:	Hugh Dickins <hughd@google.com>
> -R:	Baolin Wang <baolin.wang@linux.alibaba.com>
> -L:	linux-mm@kvack.org
> -S:	Maintained
> -F:	include/linux/memfd.h
> -F:	include/linux/shmem_fs.h
> -F:	mm/memfd.c
> -F:	mm/shmem.c
> -F:	mm/shmem_quota.c
> -
>  TOMOYO SECURITY MODULE
>  M:	Kentaro Takeda <takedakn@nttdata.co.jp>
>  M:	Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
>
> --
> 2.43.0
>

--
Cheers, Lorenzo