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Howlett" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Axel Rasmussen , Vlastimil Babka , James Houghton , Nikita Kalyazin , Lorenzo Stoakes , Ujwal Kundur , Mike Rapoport , Andrew Morton , Andrea Arcangeli , Michal Hocko , Muchun Song , Oscar Salvador , Hugh Dickins , Suren Baghdasaryan References: <9089d994-262f-4941-8bed-f3c6ee05a769@redhat.com> <6csw4pmymno4kdtlbzd74posr3dekamq4zkje2mfkmbg5q7xbx@y3o323tbm7h3> 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: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: h07bTrpehgvTXGKnzBsJ0pxxabzlpeVGXgQjsXBRqoc_1759868585 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: rspam12 X-Rspamd-Queue-Id: A4C8A100009 X-Stat-Signature: x6atbusaui6uiazbdgs8cj8o7s46puus X-Rspam-User: X-HE-Tag: 1759868590-62055 X-HE-Meta: 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 BNJNrBUg 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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: > I believe that's what David mentioned very initially here: > > https://lore.kernel.org/r/f1da3505-f17f-4829-80c1-696b1d99057d@redhat.com > > I'd rather go with the two fields, but if we're trying to introduce another > feature sets almost only for vm_uffd_ops, I'd prefer keeping it simple, and > deduce the modes from ioctls. > > Is that ok for you? So it'll have (1) get_folio(), (2) supported_ioctls. > That's all. I cannot speak for Liam, but for me that looks like the best way forward for now. I'd hope that we could get this all cleaned up at some point -- including hugetlb, because it's a pain to have the hugetlb special casing all over the place even if it's at some point a legacy thing (we all know it will stick around for years to come). -- Cheers David / dhildenb