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[79.242.53.59]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38bf3221a5csm16660588f8f.34.2025.01.22.06.26.52 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Jan 2025 06:26:53 -0800 (PST) Message-ID: <04002289-c78f-4e1d-b242-144dd53a62f8@redhat.com> Date: Wed, 22 Jan 2025 15:26:52 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/3] selftests/mm: make file-backed THP split work by setting force option To: Zi Yan , linux-mm@kvack.org, Andrew Morton , Baolin Wang Cc: "Kirill A . Shutemov" , "Matthew Wilcox (Oracle)" , Ryan Roberts , Hugh Dickins , Yang Shi , Miaohe Lin , Kefeng Wang , Yu Zhao , John Hubbard , linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org References: <20250122124047.1216024-1-ziy@nvidia.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: <20250122124047.1216024-1-ziy@nvidia.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: IuhznIlHBUZp_kf5O5Yr_6VIaxi2YAdrfT4s12qwjPA_1737556015 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 5A5A7100003 X-Stat-Signature: f7qqcwtq4tegjrko5qnfxub41cebm31z X-Rspam-User: X-HE-Tag: 1737556018-434344 X-HE-Meta: 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 OqoAeg4/ 0C1MZBwBbcizBUIgrEXh2rQ5157792SxnTH2wfOcG7QJo5dqChAfqIPBGE5eo0cSPXlj2ejszHAduAG4kE0EY08kmOG7zgt3ZFp6tcdxZLFyjpYDVvles5FPKUz20QTCPYEQSwoAQL6KkMQfbLymfZQ6ilW/WEStvSnflF+e4AbRl4bgUxNC6sEfjWO3aK9y7oZZ5UP1LVgR4Bil05teQRqB2b7EcKka7d8rXxxZzR0acFyNXwv9cUcquiQXgIFsOkKx8SRnLJDSDO3VIjlrS7y+rPMt6w+DoQLeEhIGkIJwsd2ly87jr+Flbumsn/OwN9W8oYW1n7NJcQxbXxSSiu2gIQXVvMC8SFAlIVFAtJyAvmH28Dx57goAJ20DZ21IweAfF9Xlcj2+STqENL9Llk1wQ4dYUxdvfdyViQ35jZ4/YTQcCfZiZN/Jbt0OWv80aBjCn 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 22.01.25 13:40, Zi Yan wrote: > Commit acd7ccb284b8 ("mm: shmem: add large folio support for tmpfs") > changes huge=always to allocate THP/mTHP based on write size and > split_huge_page_test does not write PMD size data, so file-back THP is not > created during the test. Just curious, why can't we write PMD size data instead, to avoid messing with the "force" option? -- Cheers, David / dhildenb