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[2003:cb:c737:1900:16b0:8dc:77e:31af]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-37308265698sm10888625f8f.106.2024.08.26.08.06.42 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 26 Aug 2024 08:06:43 -0700 (PDT) Message-ID: Date: Mon, 26 Aug 2024 17:06:42 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/6] mm: migrate_device: use more folio in migrate_device_unmap() To: Kefeng Wang , Andrew Morton Cc: Matthew Wilcox , Baolin Wang , Zi Yan , Alistair Popple , Jonathan Corbet , linux-mm@kvack.org References: <20240826065814.1336616-1-wangkefeng.wang@huawei.com> <20240826065814.1336616-4-wangkefeng.wang@huawei.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: <20240826065814.1336616-4-wangkefeng.wang@huawei.com> X-Mimecast-Spam-Score: 0 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: ggsh14pa6e5cge96p797yfsdkzy7is44 X-Rspam-User: X-Rspamd-Queue-Id: D164F20038 X-Rspamd-Server: rspam02 X-HE-Tag: 1724684807-736306 X-HE-Meta: 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 11v400WF 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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 26.08.24 08:58, Kefeng Wang wrote: > The page for migrate_device_unmap() already has a reference, so it is > safe to convert the page to folio to save a few calls to compound_head(), > which removes the last isolate_lru_page() call. > > Signed-off-by: Kefeng Wang > --- Acked-by: David Hildenbrand -- Cheers, David / dhildenb