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From: Zi Yan <ziy@nvidia.com>
To: "\"Pankaj Raghav (Samsung)\"" <kernel@pankajraghav.com>
Cc: Zi Yan <ziy@nvidia.com>,
 "\"Matthew Wilcox (Oracle)\"" <willy@infradead.org>, linux-mm@kvack.org,
 David Hildenbrand <david@redhat.com>, Yang Shi <shy828301@gmail.com>,
 Yu Zhao <yuzhao@google.com>,
 "\"Kirill A . Shutemov\"" <kirill.shutemov@linux.intel.com>,
 Ryan Roberts <ryan.roberts@arm.com>,
 =?utf-8?q?=22Michal_Koutn=C3=BD=22?= <mkoutny@suse.com>,
 Roman Gushchin <roman.gushchin@linux.dev>,
 "\"Zach O'Keefe\"" <zokeefe@google.com>, Hugh Dickins <hughd@google.com>,
 Mcgrof Chamberlain <mcgrof@kernel.org>,
 Andrew Morton <akpm@linux-foundation.org>, linux-kernel@vger.kernel.org,
 cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org,
 linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v4 0/7] Split a folio to any lower order folios
Date: Wed, 14 Feb 2024 12:18:14 -0500
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Content-Type: text/plain

Hi Pankaj,

On 13 Feb 2024, at 16:55, Zi Yan wrote:

> From: Zi Yan <ziy@nvidia.com>
>
> Hi all,
>
> File folio supports any order and multi-size THP is upstreamed[1], so both
> file and anonymous folios can be >0 order. Currently, split_huge_page()
> only splits a huge page to order-0 pages, but splitting to orders higher than
> 0 is going to better utilize large folios. In addition, Large Block
> Sizes in XFS support would benefit from it[2]. This patchset adds support for

Just talked to Matthew about his order-1 pagecache folio, I am planning to
grab that into this one, so that I can remove the restriction in my patches
and you guys do not need to do that in your patchset. Let me know if it works
for you.

--
Best Regards,
Yan, Zi

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