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Date:   Tue, 4 Apr 2023 14:47:27 -0700
From:   Andrew Morton <akpm@linux-foundation.org>
To:     Zi Yan <ziy@nvidia.com>
Cc:     Zi Yan <zi.yan@sent.com>,
        "Matthew Wilcox (Oracle)" <willy@infradead.org>,
        Yang Shi <shy828301@gmail.com>, Yu Zhao <yuzhao@google.com>,
        linux-mm@kvack.org,
        "Kirill A . Shutemov" <kirill.shutemov@linux.intel.com>,
        Ryan Roberts <ryan.roberts@arm.com>,
        Michal =?ISO-8859-1?Q?Koutn=FD?= <mkoutny@suse.com>,
        Roman Gushchin <roman.gushchin@linux.dev>,
        "Zach O'Keefe" <zokeefe@google.com>, linux-kernel@vger.kernel.org,
        cgroups@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-kselftest@vger.kernel.org
Subject: Re: [PATCH v3 0/7] Split a folio to any lower order folios
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On Mon,  3 Apr 2023 16:18:32 -0400 Zi Yan <zi.yan@sent.com> wrote:

> File folio supports any order and people would like to support flexible orders
> for anonymous folio[1] too. Currently, split_huge_page() only splits a huge
> page to order-0 pages, but splitting to orders higher than 0 is also useful.
> This patchset adds support for splitting a huge page to any lower order pages
> and uses it during file folio truncate operations.

This series (and its v1 & v2) don't appear to have much in the way of
detailed review.  As it's at v3 and has been fairly stable I'll queue
it up for some testing now, but I do ask that some reviewers go through
it please.