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[2003:d8:2f47:2b00:c5f3:4053:2918:d17c]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3b778f104ffsm8644052f8f.66.2025.07.28.06.03.18 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Jul 2025 06:03:18 -0700 (PDT) Message-ID: Date: Mon, 28 Jul 2025 15:03:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC] Disable auto_movable_ratio for selfhosted memmap To: Michal Hocko Cc: Oscar Salvador , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Hannes Reinecke References: <2f24e725-cddb-41c5-ba87-783930efb2aa@redhat.com> <79919ace-9cd2-4600-9615-6dc26ba19e19@redhat.com> <1f8d924d-3554-43a6-a75e-66a08d1ce7b9@redhat.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/g1oFAmgsLPQFCRvGjuMACgkQTd4Q 9wD/g1o0bxAAqYC7gTyGj5rZwvy1VesF6YoQncH0yI79lvXUYOX+Nngko4v4dTlOQvrd/vhb 02e9FtpA1CxgwdgIPFKIuXvdSyXAp0xXuIuRPQYbgNriQFkaBlHe9mSf8O09J3SCVa/5ezKM OLW/OONSV/Fr2VI1wxAYj3/Rb+U6rpzqIQ3Uh/5Rjmla6pTl7Z9/o1zKlVOX1SxVGSrlXhqt kwdbjdj/csSzoAbUF/duDuhyEl11/xStm/lBMzVuf3ZhV5SSgLAflLBo4l6mR5RolpPv5wad GpYS/hm7HsmEA0PBAPNb5DvZQ7vNaX23FlgylSXyv72UVsObHsu6pT4sfoxvJ5nJxvzGi69U s1uryvlAfS6E+D5ULrV35taTwSpcBAh0/RqRbV0mTc57vvAoXofBDcs3Z30IReFS34QSpjvl Hxbe7itHGuuhEVM1qmq2U72ezOQ7MzADbwCtn+yGeISQqeFn9QMAZVAkXsc9Wp0SW/WQKb76 FkSRalBZcc2vXM0VqhFVzTb6iNqYXqVKyuPKwhBunhTt6XnIfhpRgqveCPNIasSX05VQR6/a OBHZX3seTikp7A1z9iZIsdtJxB88dGkpeMj6qJ5RLzUsPUVPodEcz1B5aTEbYK6428H8MeLq NFPwmknOlDzQNC6RND8Ez7YEhzqvw7263MojcmmPcLelYbfOwU0EVcufkQEQAOfX3n0g0fZz 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+DWgUCaCwtJQUJG8aPFAAKCRBN3hD3AP+DWlDnD/4k2TW+HyOOOePVm23F5HOhNNd7nNv3 Vq2cLcW1DteHUdxMO0X+zqrKDHI5hgnE/E2QH9jyV8mB8l/ndElobciaJcbl1cM43vVzPIWn 01vW62oxUNtEvzLLxGLPTrnMxWdZgxr7ACCWKUnMGE2E8eca0cT2pnIJoQRz242xqe/nYxBB /BAK+dsxHIfcQzl88G83oaO7vb7s/cWMYRKOg+WIgp0MJ8DO2IU5JmUtyJB+V3YzzM4cMic3 bNn8nHjTWw/9+QQ5vg3TXHZ5XMu9mtfw2La3bHJ6AybL0DvEkdGxk6YHqJVEukciLMWDWqQQ RtbBhqcprgUxipNvdn9KwNpGciM+hNtM9kf9gt0fjv79l/FiSw6KbCPX9b636GzgNy0Ev2UV m00EtcpRXXMlEpbP4V947ufWVK2Mz7RFUfU4+ETDd1scMQDHzrXItryHLZWhopPI4Z+ps0rB CQHfSpl+wG4XbJJu1D8/Ww3FsO42TMFrNr2/cmqwuUZ0a0uxrpkNYrsGjkEu7a+9MheyTzcm vyU2knz5/stkTN2LKz5REqOe24oRnypjpAfaoxRYXs+F8wml519InWlwCra49IUSxD1hXPxO WBe5lqcozu9LpNDH/brVSzHCSb7vjNGvvSVESDuoiHK8gNlf0v+epy5WYd7CGAgODPvDShGN g3eXuA== Organization: Red Hat In-Reply-To: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: Ipi8e9VbQDCY_GM1Jjwq5wc69Tdu4Iv1Y8UHCj7ttyw_1753707800 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: B3405180013 X-Stat-Signature: 34rjtkxbrwwk698hou3qsadzwhsguc1s X-Rspam-User: X-Rspamd-Server: rspam08 X-HE-Tag: 1753707803-213146 X-HE-Meta: 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 w3gZQID0 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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 28.07.25 15:00, Michal Hocko wrote: > On Mon 28-07-25 14:27:29, David Hildenbrand wrote: > [...] >>> I think the whole libdaxctl handling for onlining memory is based on that. >>> >> >> Sorry, forgot to add a pointer: >> >> https://github.com/pmem/ndctl/blob/main/daxctl/lib/libdaxctl.c > > Thanks for the pointer! I will have a look. In particular daxctl_memory_op(), used to implement stuff like daxctl online-memory daxctl offline-memory daxctl reconfigure-device (--no-online, --no-movable) I am not sure if they also offline memory automatically before disabling a device. But in essence, they want to to everything automatically as possible. -- Cheers, David / dhildenb