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Date:   Fri, 24 Nov 2023 16:25:38 +0100
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Subject: Re: [RESEND PATCH v7 00/10] Small-sized THP for anonymous memory
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To:     Matthew Wilcox <willy@infradead.org>,
        Ryan Roberts <ryan.roberts@arm.com>
Cc:     Andrew Morton <akpm@linux-foundation.org>,
        Yin Fengwei <fengwei.yin@intel.com>,
        Yu Zhao <yuzhao@google.com>,
        Catalin Marinas <catalin.marinas@arm.com>,
        Anshuman Khandual <anshuman.khandual@arm.com>,
        Yang Shi <shy828301@gmail.com>,
        "Huang, Ying" <ying.huang@intel.com>, Zi Yan <ziy@nvidia.com>,
        Luis Chamberlain <mcgrof@kernel.org>,
        Itaru Kitayama <itaru.kitayama@gmail.com>,
        "Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
        John Hubbard <jhubbard@nvidia.com>,
        David Rientjes <rientjes@google.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        Hugh Dickins <hughd@google.com>,
        Kefeng Wang <wangkefeng.wang@huawei.com>, linux-mm@kvack.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
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From:   David Hildenbrand <david@redhat.com>
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On 24.11.23 16:13, Matthew Wilcox wrote:
> On Fri, Nov 24, 2023 at 09:56:37AM +0000, Ryan Roberts wrote:
>> On 23/11/2023 15:59, Matthew Wilcox wrote:
>>> On Wed, Nov 22, 2023 at 04:29:40PM +0000, Ryan Roberts wrote:
>>>> This is v7 of a series to implement small-sized THP for anonymous memory
>>>> (previously called "large anonymous folios"). The objective of this is to
>>>
>>> I'm still against small-sized THP.  We've now got people asking whether
>>> the THP counters should be updated when dealing with large folios that
>>> are smaller than PMD sized.  It's sowing confusion, and we should go
>>> back to large anon folios as a name.
>>
>> I suspect I'm labouring the point here, but I'd like to drill into exactly what
>> you are objecting to. Is it:
>>
>> A) Using the name "small-sized THP" (which is currently only used in the commit
>> logs and a couple of times in the documentation).
> 
> Yes, this is what I'm objecting to.

I'll just repeat that "large anon folio" is misleading, because
* we already have "large anon folios" in hugetlb
* we already have PMD-sized "large anon folios" in THP

But inn the end, I don't care how we will call this in a commit message.

Just sticking to what we have right now makes most sense to me.

I know, as the creator of the term "folio" you have to object :P Sorry ;)

-- 
Cheers,

David / dhildenb