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[2003:d8:2f0c:c200:fa4a:c4ff:1b32:21ce]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-47114423862sm233219665e9.1.2025.10.20.06.11.06 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 20 Oct 2025 06:11:07 -0700 (PDT) Message-ID: Date: Mon, 20 Oct 2025 15:11:05 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 4/4] mm: huge_memory: use folio_needs_prot_numa() for pmd folio To: Kefeng Wang , Andrew Morton , Lorenzo Stoakes , linux-mm@kvack.org Cc: Zi Yan , Baolin Wang , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Liam.Howlett@oracle.com, Sidhartha Kumar References: <20251020061845.3347258-1-wangkefeng.wang@huawei.com> <20251020061845.3347258-5-wangkefeng.wang@huawei.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 ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZoEEwEIAEQCGwMCF4ACGQEFCwkIBwICIgIG FQoJCAsCBBYCAwECHgcWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaJzangUJJlgIpAAKCRBN 3hD3AP+DWhAxD/9wcL0A+2rtaAmutaKTfxhTP0b4AAp1r/eLxjrbfbCCmh4pqzBhmSX/4z11 opn2KqcOsueRF1t2ENLOWzQu3Roiny2HOU7DajqB4dm1BVMaXQya5ae2ghzlJN9SIoopTWlR 0Af3hPj5E2PYvQhlcqeoehKlBo9rROJv/rjmr2x0yOM8qeTroH/ZzNlCtJ56AsE6Tvl+r7cW 3x7/Jq5WvWeudKrhFh7/yQ7eRvHCjd9bBrZTlgAfiHmX9AnCCPRPpNGNedV9Yty2Jnxhfmbv Pw37LA/jef8zlCDyUh2KCU1xVEOWqg15o1RtTyGV1nXV2O/mfuQJud5vIgzBvHhypc3p6VZJ lEf8YmT+Ol5P7SfCs5/uGdWUYQEMqOlg6w9R4Pe8d+mk8KGvfE9/zTwGg0nRgKqlQXrWRERv cuEwQbridlPAoQHrFWtwpgYMXx2TaZ3sihcIPo9uU5eBs0rf4mOERY75SK+Ekayv2ucTfjxr Kf014py2aoRJHuvy85ee/zIyLmve5hngZTTe3Wg3TInT9UTFzTPhItam6dZ1xqdTGHZYGU0O otRHcwLGt470grdiob6PfVTXoHlBvkWRadMhSuG4RORCDpq89vu5QralFNIf3EysNohoFy2A LYg2/D53xbU/aa4DDzBb5b1Rkg/udO1gZocVQWrDh6I2K3+cCs7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20251020061845.3347258-5-wangkefeng.wang@huawei.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 1j_PIaX-ZaI0HgoGGBaqlfZI_pGccFvIaeYJNGt5i0M_1760965868 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: sh83djc36sakawwt6ugeoa1fb45kwwe8 X-Rspamd-Queue-Id: 2D5898001B X-Rspamd-Server: rspam06 X-Rspam-User: X-HE-Tag: 1760965871-369372 X-HE-Meta: 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 MLt6jRNX 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 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 20.10.25 08:18, Kefeng Wang wrote: > The folio_needs_prot_numa() checks whether to need prot numa, which > skips unsuitable folio, i.e. zone device, shared folios(ksm, CoW), ksm only applies to small folios. > non-movable dma pinned, dirty file folio and already numa affinity's "...and folios that already have the expected node affinity ... " ? > folios, the policy should be applied to pmd folio too, which helps > to avoid unnecessary pmd change and folio migration attempts. > > Reviewed-by: Sidhartha Kumar > Signed-off-by: Kefeng Wang > --- Acked-by: David Hildenbrand -- Cheers David / dhildenb