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Message-Id: <1CA76834-D826-4799-A114-0E27A10D062F@linux.dev>
Date: Thu, 15 Sep 2022 09:40:34 +0800
From: Muchun Song <muchun.song@...ux.dev>
To: Doug Berger <opendmb@...il.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Jonathan Corbet <corbet@....net>,
Rob Herring <robh+dt@...nel.org>,
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Muchun Song <songmuchun@...edance.com>,
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Linux MM <linux-mm@...ck.org>, iommu@...ts.linux.dev
Subject: Re: [PATCH 03/21] mm/hugetlb: correct demote page offset logic
> On Sep 14, 2022, at 03:54, Doug Berger <opendmb@...il.com> wrote:
>
> With gigantic pages it may not be true that struct page structures
> are contiguous across the entire gigantic page. The mem_map_offset
> function is used here in place of direct pointer arithmetic to
> correct for this.
>
> Fixes: 8531fc6f52f5 ("hugetlb: add hugetlb demote page support")
> Signed-off-by: Doug Berger <opendmb@...il.com>
With Matthew’s suggestion.
Acked-by: Muchun Song <songmuchun@...edance.com>
Thanks.
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