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[2003:d8:2f4a:8900:884a:b3af:e3c9:ec88]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a1f57ddfd6sm22497356f8f.4.2025.05.15.07.44.20 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 15 May 2025 07:44:21 -0700 (PDT) Message-ID: <2d30bcce-6f80-468f-945d-b63eff726db5@redhat.com> Date: Thu, 15 May 2025 16:44:20 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 1/6] prctl: introduce PR_THP_POLICY_DEFAULT_HUGE for the process To: Lorenzo Stoakes , Usama Arif Cc: Andrew Morton , linux-mm@kvack.org, hannes@cmpxchg.org, shakeel.butt@linux.dev, riel@surriel.com, ziy@nvidia.com, laoar.shao@gmail.com, baolin.wang@linux.alibaba.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, kernel-team@meta.com References: <20250515133519.2779639-1-usamaarif642@gmail.com> <20250515133519.2779639-2-usamaarif642@gmail.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: X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: Rs7LRD3JbxeD0M9pRk3F4SpZbf5I9IXRRAikDHjyoWo_1747320262 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: u58uxsjr6r4chxctrf3cq9amjyzoc9o7 X-Rspamd-Queue-Id: 7D8D840004 X-Rspam-User: X-Rspamd-Server: rspam02 X-HE-Tag: 1747320265-833208 X-HE-Meta: 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 KiHaMa4M 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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 15.05.25 16:40, Lorenzo Stoakes wrote: > Overall I feel this series should _DEFINITELY_ be an RFC. This is pretty > outlandish stuff and needs discussion. > > You're basically making it so /sys/kernel/mm/transparent_hugepage/enabled = > never is completely ignored and overridden. I thought I made it very clear during earlier discussions that never means never. -- Cheers, David / dhildenb