linux-kernel - Re: [PATCH v3 1/4] mm: establish mm/vma_exec.c for shared exec/mm VMA functionality

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Message-ID: <966924c1-54f7-45c9-9e5a-649d08ea3655@suse.cz>
Date: Tue, 29 Apr 2025 08:59:13 +0200
From: Vlastimil Babka <vbabka@...e.cz>
To: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>,
 Andrew Morton <akpm@...ux-foundation.org>
Cc: "Liam R . Howlett" <Liam.Howlett@...cle.com>, Jann Horn
 <jannh@...gle.com>, Pedro Falcato <pfalcato@...e.de>,
 David Hildenbrand <david@...hat.com>, Kees Cook <kees@...nel.org>,
 Alexander Viro <viro@...iv.linux.org.uk>,
 Christian Brauner <brauner@...nel.org>, Jan Kara <jack@...e.cz>,
 Suren Baghdasaryan <surenb@...gle.com>, linux-mm@...ck.org,
 linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 1/4] mm: establish mm/vma_exec.c for shared exec/mm VMA
 functionality

On 4/28/25 17:28, Lorenzo Stoakes wrote:
> There is functionality that overlaps the exec and memory mapping
> subsystems. While it properly belongs in mm, it is important that exec
> maintainers maintain oversight of this functionality correctly.
> 
> We can establish both goals by adding a new mm/vma_exec.c file which
> contains these 'glue' functions, and have fs/exec.c import them.
> 
> As a part of this change, to ensure that proper oversight is achieved, add
> the file to both the MEMORY MAPPING and EXEC & BINFMT API, ELF sections.
> 
> scripts/get_maintainer.pl can correctly handle files in multiple entries
> and this neatly handles the cross-over.
> 
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>

Reviewed-by: Vlastimil Babka <vbabka@...e.cz>