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(p200300cbc721a0007426f6b482a3c6ab.dip0.t-ipconnect.de. [2003:cb:c721:a000:7426:f6b4:82a3:c6ab]) by smtp.gmail.com with ESMTPSA id e7-20020a05600c438700b004080f0376a0sm5210665wmn.42.2023.11.24.07.25.39 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 24 Nov 2023 07:25:40 -0800 (PST) Message-ID: <9c8f6d2a-7ed8-45d2-9684-d77489bd99b8@redhat.com> Date: Fri, 24 Nov 2023 16:25:38 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RESEND PATCH v7 00/10] Small-sized THP for anonymous memory To: Matthew Wilcox , Ryan Roberts Cc: Andrew Morton , Yin Fengwei , Yu Zhao , Catalin Marinas , Anshuman Khandual , Yang Shi , "Huang, Ying" , Zi Yan , Luis Chamberlain , Itaru Kitayama , "Kirill A. Shutemov" , John Hubbard , David Rientjes , Vlastimil Babka , Hugh Dickins , Kefeng Wang , linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org References: <20231122162950.3854897-1-ryan.roberts@arm.com> From: David Hildenbrand Autocrypt: addr=david@redhat.com; keydata= xsFNBFXLn5EBEAC+zYvAFJxCBY9Tr1xZgcESmxVNI/0ffzE/ZQOiHJl6mGkmA1R7/uUpiCjJ dBrn+lhhOYjjNefFQou6478faXE6o2AhmebqT4KiQoUQFV4R7y1KMEKoSyy8hQaK1umALTdL QZLQMzNE74ap+GDK0wnacPQFpcG1AE9RMq3aeErY5tujekBS32jfC/7AnH7I0v1v1TbbK3Gp XNeiN4QroO+5qaSr0ID2sz5jtBLRb15RMre27E1ImpaIv2Jw8NJgW0k/D1RyKCwaTsgRdwuK Kx/Y91XuSBdz0uOyU/S8kM1+ag0wvsGlpBVxRR/xw/E8M7TEwuCZQArqqTCmkG6HGcXFT0V9 PXFNNgV5jXMQRwU0O/ztJIQqsE5LsUomE//bLwzj9IVsaQpKDqW6TAPjcdBDPLHvriq7kGjt WhVhdl0qEYB8lkBEU7V2Yb+SYhmhpDrti9Fq1EsmhiHSkxJcGREoMK/63r9WLZYI3+4W2rAc UucZa4OT27U5ZISjNg3Ev0rxU5UH2/pT4wJCfxwocmqaRr6UYmrtZmND89X0KigoFD/XSeVv jwBRNjPAubK9/k5NoRrYqztM9W6sJqrH8+UWZ1Idd/DdmogJh0gNC0+N42Za9yBRURfIdKSb B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzSREYXZpZCBIaWxk ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZgEEwEIAEICGwMGCwkIBwMCBhUIAgkKCwQW AgMBAh4BAheAAhkBFiEEG9nKrXNcTDpGDfzKTd4Q9wD/g1oFAl8Ox4kFCRKpKXgACgkQTd4Q 9wD/g1oHcA//a6Tj7SBNjFNM1iNhWUo1lxAja0lpSodSnB2g4FCZ4R61SBR4l/psBL73xktp rDHrx4aSpwkRP6Epu6mLvhlfjmkRG4OynJ5HG1gfv7RJJfnUdUM1z5kdS8JBrOhMJS2c/gPf wv1TGRq2XdMPnfY2o0CxRqpcLkx4vBODvJGl2mQyJF/gPepdDfcT8/PY9BJ7FL6Hrq1gnAo4 3Iv9qV0JiT2wmZciNyYQhmA1V6dyTRiQ4YAc31zOo2IM+xisPzeSHgw3ONY/XhYvfZ9r7W1l pNQdc2G+o4Di9NPFHQQhDw3YTRR1opJaTlRDzxYxzU6ZnUUBghxt9cwUWTpfCktkMZiPSDGd KgQBjnweV2jw9UOTxjb4LXqDjmSNkjDdQUOU69jGMUXgihvo4zhYcMX8F5gWdRtMR7DzW/YE BgVcyxNkMIXoY1aYj6npHYiNQesQlqjU6azjbH70/SXKM5tNRplgW8TNprMDuntdvV9wNkFs 9TyM02V5aWxFfI42+aivc4KEw69SE9KXwC7FSf5wXzuTot97N9Phj/Z3+jx443jo2NR34XgF 89cct7wJMjOF7bBefo0fPPZQuIma0Zym71cP61OP/i11ahNye6HGKfxGCOcs5wW9kRQEk8P9 M/k2wt3mt/fCQnuP/mWutNPt95w9wSsUyATLmtNrwccz63XOwU0EVcufkQEQAOfX3n0g0fZz Bgm/S2zF/kxQKCEKP8ID+Vz8sy2GpDvveBq4H2Y34XWsT1zLJdvqPI4af4ZSMxuerWjXbVWb T6d4odQIG0fKx4F8NccDqbgHeZRNajXeeJ3R7gAzvWvQNLz4piHrO/B4tf8svmRBL0ZB5P5A 2uhdwLU3NZuK22zpNn4is87BPWF8HhY0L5fafgDMOqnf4guJVJPYNPhUFzXUbPqOKOkL8ojk CXxkOFHAbjstSK5Ca3fKquY3rdX3DNo+EL7FvAiw1mUtS+5GeYE+RMnDCsVFm/C7kY8c2d0G NWkB9pJM5+mnIoFNxy7YBcldYATVeOHoY4LyaUWNnAvFYWp08dHWfZo9WCiJMuTfgtH9tc75 7QanMVdPt6fDK8UUXIBLQ2TWr/sQKE9xtFuEmoQGlE1l6bGaDnnMLcYu+Asp3kDT0w4zYGsx 5r6XQVRH4+5N6eHZiaeYtFOujp5n+pjBaQK7wUUjDilPQ5QMzIuCL4YjVoylWiBNknvQWBXS lQCWmavOT9sttGQXdPCC5ynI+1ymZC1ORZKANLnRAb0NH/UCzcsstw2TAkFnMEbo9Zu9w7Kv AxBQXWeXhJI9XQssfrf4Gusdqx8nPEpfOqCtbbwJMATbHyqLt7/oz/5deGuwxgb65pWIzufa N7eop7uh+6bezi+rugUI+w6DABEBAAHCwXwEGAEIACYCGwwWIQQb2cqtc1xMOkYN/MpN3hD3 AP+DWgUCXw7HsgUJEqkpoQAKCRBN3hD3AP+DWrrpD/4qS3dyVRxDcDHIlmguXjC1Q5tZTwNB boaBTPHSy/Nksu0eY7x6HfQJ3xajVH32Ms6t1trDQmPx2iP5+7iDsb7OKAb5eOS8h+BEBDeq 3ecsQDv0fFJOA9ag5O3LLNk+3x3q7e0uo06XMaY7UHS341ozXUUI7wC7iKfoUTv03iO9El5f XpNMx/YrIMduZ2+nd9Di7o5+KIwlb2mAB9sTNHdMrXesX8eBL6T9b+MZJk+mZuPxKNVfEQMQ a5SxUEADIPQTPNvBewdeI80yeOCrN+Zzwy/Mrx9EPeu59Y5vSJOx/z6OUImD/GhX7Xvkt3kq Er5KTrJz3++B6SH9pum9PuoE/k+nntJkNMmQpR4MCBaV/J9gIOPGodDKnjdng+mXliF3Ptu6 3oxc2RCyGzTlxyMwuc2U5Q7KtUNTdDe8T0uE+9b8BLMVQDDfJjqY0VVqSUwImzTDLX9S4g/8 kC4HRcclk8hpyhY2jKGluZO0awwTIMgVEzmTyBphDg/Gx7dZU1Xf8HFuE+UZ5UDHDTnwgv7E th6RC9+WrhDNspZ9fJjKWRbveQgUFCpe1sa77LAw+XFrKmBHXp9ZVIe90RMe2tRL06BGiRZr jPrnvUsUUsjRoRNJjKKA/REq+sAnhkNPPZ/NNMjaZ5b8Tovi8C0tmxiCHaQYqj7G2rgnT0kt WNyWQQ== Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 369D3C001C X-Rspam-User: X-Rspamd-Server: rspam04 X-Stat-Signature: heoa9x7yrrnwar9f43zs7weiuizb18r3 X-HE-Tag: 1700839544-482540 X-HE-Meta: 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 XRUwMjjw xoUR9viJTwN0QGsUEjqFlGrADCkC0sBkdnP8hwILU/olpVB6ZcPYPTdoxUNJV9zjTb4zL3e3sLNSIGoGk7QRiMOwvgl3BM01gqNJA4qlP1u/ggt8h/BAO1Q6VjxqN4dLMnrp+l5Ua/OYvtWhkFa8SP6RSqnnjIOKkwUFlZ56zWWAv9FTpXzNkjqjm33UtAydDcEXk9tfiTUp/66PZRzZO53MC2G71tbrwa/OLQW3hC4D86erI4Mz2+APrTBRj4vh7M9ke8UqH2fFNFjahK3r31RwnGZstXzEPCBcWArsG0c1OyW+NmirAsG4lvTHuSw6YcvgWA+jHEH8VE4+DnWm/K12cKotas4MMs9b54vYyeKbpNeKgPw91yd/XfsEnEKSkO3mLbMEq4efbCgxwRKHeBTMYLYMw9S2Y72uJo/R2YFcWeGxHrFvbjHO5GG33rZH7f049Je/sFGeK3l3WOy1GExce+olXC/ynAXjnJQCmJA0v6nk= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: 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