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[2003:cb:c724:4300:430f:1c83:1abc:1d66]) by smtp.gmail.com with ESMTPSA id l15-20020a5d560f000000b0033ea499c645sm1150485wrv.4.2024.04.11.00.55.29 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 11 Apr 2024 00:55:30 -0700 (PDT) Message-ID: Date: Thu, 11 Apr 2024 09:55:28 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 0/10] transfer page to folio in KSM To: alexs@kernel.org, Andrew Morton , linux-mm@kvack.org, linux-kernel@vger.kernel.org, zik.eidus@ravellosystems.com, willy@infradead.org, aarcange@redhat.com, hughd@google.com, chrisw@sous-sol.org References: <20240411061713.1847574-1-alexs@kernel.org> 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: <20240411061713.1847574-1-alexs@kernel.org> 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: 5E067140009 X-Rspam-User: X-Stat-Signature: ckuej5q6r4bcyk6pfa8xpckar8jka83c X-Rspamd-Server: rspam03 X-HE-Tag: 1712822134-152957 X-HE-Meta: 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 Igu7gHYF cYL3/EC4d3uNbU7259MewHMO/p1fDhAnkMYdlRslt4asEHYtJ+EjgKbF21pSa+ts9z8oaplq42s05MN+rUo6oC7yarVUai3V/+agpyYJ7id0dMMcNA4gqwyLZ/0pUkTNogyWMQI0mgvS92XznWNdOZxFUtGma/EgEGEYl6H2aHXXKGZXDz7kgXPKZGzHAakKxII07xep9r/LwOWeZ+b3mD54/cO32vdB3KgyWlvHic5hpuC0g7lpKUzi94+/OYdT1SU0RAlMU2g/tNdWwniLQp9ct0QQ44uCRhsarDtAlPb1OjfCkvJfyqU5rlQSPk/C28AaZc9ZIYD6Q6o6j+ld9aqiSNgslEXkKBlYzPOn7YMbFYKECSU33//3ME3VNxZlCL1qoV6dfZ8fHYq5HyAlzkUqcfWLzeP+hMVnQEuwj66LuIf87OSojfriQewIUN0xj4TVn4VtKqRfl3D8WOfkDY7ko+yj/LuceALW482C1Chde5XEedoO48gHTokbx8pKdNJY3ofHyGxQpZXVD4lbJmE406zYsqfjbDb2IQFOjbxfCma7dtLIrs/+WMw== 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 11.04.24 08:17, alexs@kernel.org wrote: > From: "Alex Shi (tencent)" > > This is the first part of page to folio transfer on KSM. Since only > single page could be stored in KSM, we could safely transfer stable tree > pages to folios. > This patchset could reduce ksm.o 57kbytes from 2541776 bytes on latest > akpm/mm-stable branch with CONFIG_DEBUG_VM enabled. It pass the KSM testing > in LTP and kernel selftest. Just a nit (no need to address for this patch set): "transfer page to folio" sounds very misleading to me. I'm not a native speaker, but I'd have called this patch set "mm/ksm: convert some KSM code to use folios" It's rather code conversion/transformation, not a transfer. But again, I'm not a native speaker ... -- Cheers, David / dhildenb