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

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Message-ID: <CAK1f24m7uHpPa75acP_-hHh5bcStegtQJY_2rDqpKeviUhBdzg@mail.gmail.com>
Date: Fri, 14 Jun 2024 22:41:27 +0800
From: Lance Yang <ioworker0@...il.com>
To: Zi Yan <ziy@...dia.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 Fri, Jun 14, 2024 at 10:26 PM Zi Yan <ziy@...dia.com> wrote:
>
> 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>

Thanks for taking time to review!
Lance

>
> --
> Best Regards,
> Yan, Zi