linux-kernel - Re: [PATCH v8 2/3] mm/rmap: integrate PMD-mapped folio splitting into pagewalk loop

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Message-ID: <222F10CF-99B0-41F5-AB59-5E65F38B4AEF@nvidia.com>
Date: Fri, 14 Jun 2024 10:26:48 -0400
From: Zi Yan <ziy@...dia.com>
To: Lance Yang <ioworker0@...il.com>
Cc: akpm@...ux-foundation.org, willy@...radead.org, sj@...nel.org,
 baolin.wang@...ux.alibaba.com, maskray@...gle.com, ryan.roberts@....com,
 david@...hat.com, 21cnbao@...il.com, mhocko@...e.com, fengwei.yin@...el.com,
 zokeefe@...gle.com, shy828301@...il.com, xiehuan09@...il.com,
 libang.li@...group.com, wangkefeng.wang@...wei.com, songmuchun@...edance.com,
 peterx@...hat.com, minchan@...nel.org, linux-mm@...ck.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 2/3] mm/rmap: integrate PMD-mapped folio splitting into
 pagewalk loop

On 13 Jun 2024, at 21:51, Lance Yang wrote:

> In preparation for supporting try_to_unmap_one() to unmap PMD-mapped
> folios, start the pagewalk first, then call split_huge_pmd_address() to
> split the folio.
>
> Suggested-by: David Hildenbrand <david@...hat.com>
> Suggested-by: Baolin Wang <baolin.wang@...ux.alibaba.com>
> Signed-off-by: Lance Yang <ioworker0@...il.com>
> ---
>  include/linux/huge_mm.h |  6 ++++++
>  include/linux/rmap.h    | 24 +++++++++++++++++++++++
>  mm/huge_memory.c        | 42 +++++++++++++++++++++--------------------
>  mm/rmap.c               | 21 +++++++++++++++------
>  4 files changed, 67 insertions(+), 26 deletions(-)

Thanks.

Acked-by: Zi Yan <ziy@...dia.com>

--
Best Regards,
Yan, Zi

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