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[2003:cb:c70d:3a00:d73c:6a8:ca9f:1df7]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-38a1c8add5asm52229612f8f.107.2025.01.08.05.39.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 08 Jan 2025 05:39:55 -0800 (PST) Message-ID: <5724ae77-0863-4f8a-90ad-ebe2d2268eb1@redhat.com> Date: Wed, 8 Jan 2025 14:39:54 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 1/2] mm: alloc_pages_bulk_noprof: drop page_list argument To: Luiz Capitulino , linux-mm@kvack.org, mgorman@techsingularity.net, willy@infradead.org Cc: linux-kernel@vger.kernel.org, lcapitulino@gmail.com References: 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: S8Ju3cpJHIPWH9EjxkZ-P3mTGgn_0-IYPH5BXu3heMA_1736343597 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: rspam05 X-Stat-Signature: isumqy8j3g8z9e5xefispo1kcok9eok3 X-Rspamd-Queue-Id: 0C8CD14000C X-Rspam-User: X-HE-Tag: 1736343599-131193 X-HE-Meta: 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 tSqu79/B 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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 23.12.24 23:00, Luiz Capitulino wrote: > The commit 387ba26fb1cb ("mm/page_alloc: add a bulk page allocator") added > __alloc_pages_bulk() along with the page_list argument. The next > commit 0f87d9d30f21 ("mm/page_alloc: add an array-based interface to the > bulk page allocator") added the array-based argument. As it turns out, the > page_list argument has no users in the current tree (if it ever had any). > Dropping it allows for a slight simplification and eliminates some > unnecessary checks, now that page_array is required. > > Also, note that the removal of the page_list argument was proposed before > in the thread below, where Matthew Wilcox mentions that: > > """ > Iterating a linked list is _expensive_. It is about 10x quicker to > iterate an array than a linked list. > """ > (https://lore.kernel.org/linux-mm/20231025093254.xvomlctwhcuerzky@techsingularity.net) > > Signed-off-by: Luiz Capitulino > --- Acked-by: David Hildenbrand Thanks! -- Cheers, David / dhildenb