linux-kernel - Re: [PATCH v3 2/8] mm: add atomic VMA flags and set VM_MAYBE

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Message-ID: <7d34ecb7-2051-48cf-8741-44c7cf2b4143@lucifer.local>
Date: Mon, 10 Nov 2025 17:49:36 +0000
From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Jonathan Corbet <corbet@....net>, David Hildenbrand <david@...hat.com>,
        "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>,
        Steven Rostedt <rostedt@...dmis.org>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Mathieu Desnoyers <mathieu.desnoyers@...icios.com>,
        Jann Horn <jannh@...gle.com>, Pedro Falcato <pfalcato@...e.de>,
        Zi Yan <ziy@...dia.com>, Baolin Wang <baolin.wang@...ux.alibaba.com>,
        Nico Pache <npache@...hat.com>, Ryan Roberts <ryan.roberts@....com>,
        Dev Jain <dev.jain@....com>, Barry Song <baohua@...nel.org>,
        Lance Yang <lance.yang@...ux.dev>, linux-kernel@...r.kernel.org,
        linux-fsdevel@...r.kernel.org, linux-doc@...r.kernel.org,
        linux-mm@...ck.org, linux-trace-kernel@...r.kernel.org,
        linux-kselftest@...r.kernel.org, Andrei Vagin <avagin@...il.com>
Subject: Re: [PATCH v3 2/8] mm: add atomic VMA flags and set VM_MAYBE_GUARD
 as such

Andrew - actually please ignore this, let me send another that'll fold this in
and make sparse happy too.

Cheers, Lorenzo

On Mon, Nov 10, 2025 at 05:36:29PM +0000, Lorenzo Stoakes wrote:
> Hi Andrew,
>
> Please apply this trivial fix-patch.
>
> Thanks, Lorenzo
>
> ----8<----
>
> From e73da6d99f6e32c959c7a852a90f03c9c76816c6 Mon Sep 17 00:00:00 2001
> From: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
> Date: Mon, 10 Nov 2025 17:35:11 +0000
> Subject: [PATCH] fixup
>
> Signed-off-by: Lorenzo Stoakes <lorenzo.stoakes@...cle.com>
> ---
>  include/linux/mm.h | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/include/linux/mm.h b/include/linux/mm.h
> index 699566c21ff7..e94005f2b985 100644
> --- a/include/linux/mm.h
> +++ b/include/linux/mm.h
> @@ -900,6 +900,8 @@ static inline bool vma_flag_test_atomic(struct vm_area_struct *vma, int bit)
>  {
>  	if (__vma_flag_atomic_valid(vma, bit))
>  		return test_bit(bit, &vma->__vm_flags);
> +
> +	return false;
>  }
>
>  static inline void vma_set_anonymous(struct vm_area_struct *vma)
> --
> 2.51.0