linux-kernel - Re: [PATCH v4 1/3] mm: add get_and_clear_ptes() and clear

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Message-ID: <0B957D2C-130C-448E-B38E-C1E295C275C8@nvidia.com>
Date: Tue, 29 Jul 2025 10:30:09 -0400
From: Zi Yan <ziy@...dia.com>
To: Dev Jain <dev.jain@....com>
Cc: akpm@...ux-foundation.org, david@...hat.com,
 baolin.wang@...ux.alibaba.com, lorenzo.stoakes@...cle.com,
 Liam.Howlett@...cle.com, npache@...hat.com, ryan.roberts@....com,
 baohua@...nel.org, linux-mm@...ck.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 1/3] mm: add get_and_clear_ptes() and clear_ptes()

On 24 Jul 2025, at 1:22, Dev Jain wrote:

> From: David Hildenbrand <david@...hat.com>
>
> Let's add variants to be used where "full" does not apply -- which will
> be the majority of cases in the future. "full" really only applies if
> we are about to tear down a full MM.
>
> Use get_and_clear_ptes() in existing code, clear_ptes() users will
> be added next.
>
> Reviewed-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Signed-off-by: David Hildenbrand <david@...hat.com>
> Signed-off-by: Dev Jain <dev.jain@....com>
> ---
>  arch/arm64/mm/mmu.c     |  2 +-
>  include/linux/pgtable.h | 45 +++++++++++++++++++++++++++++++++++++++++
>  mm/mremap.c             |  2 +-
>  mm/rmap.c               |  2 +-
>  4 files changed, 48 insertions(+), 3 deletions(-)
>
Reviewed-by: Zi Yan <ziy@...dia.com>

Best Regards,
Yan, Zi