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([2a09:80c0:192:0:5dac:bf3d:c41:c3e7]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-453646fd589sm143520925e9.26.2025.06.24.07.06.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Jun 2025 07:06:37 -0700 (PDT) Message-ID: <50eb8b8b-cea3-45f8-96d0-45ab88e10909@redhat.com> Date: Tue, 24 Jun 2025 16:06:35 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 4/4] mm, madvise: use standard madvise locking in madvise_set_anon_name() To: Vlastimil Babka , Andrew Morton , "Liam R. Howlett" , Lorenzo Stoakes , Jann Horn , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Colin Cross Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org References: <20250624-anon_name_cleanup-v2-0-600075462a11@suse.cz> <20250624-anon_name_cleanup-v2-4-600075462a11@suse.cz> 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: <20250624-anon_name_cleanup-v2-4-600075462a11@suse.cz> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: 5ZKOj1aAXN8IlAmW5K2LOQkxnZx6hyi39MjzUl3QzD0_1750774000 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: rspam11 X-Rspam-User: X-Rspamd-Queue-Id: 6134D140013 X-Stat-Signature: s8ngkg6b76rsz89p9dgcb3rmmtouy4iw X-HE-Tag: 1750774006-236458 X-HE-Meta: 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 4w1DmKT5 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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 24.06.25 15:03, Vlastimil Babka wrote: > Use madvise_lock()/madvise_unlock() in madvise_set_anon_name() in the > same way as in do_madvise(). This narrows the lock scope a bit and > reuses existing functionality. get_lock_mode() already picks the correct > MADVISE_MMAP_WRITE_LOCK mode for __MADV_SET_ANON_VMA_NAME so we can just > remove the explicit assignment. > > Signed-off-by: Vlastimil Babka > --- Acked-by: David Hildenbrand -- Cheers, David / dhildenb