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[2003:cb:c745:2000:5e9f:9789:2c3b:8b3d]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-395cb7ea197sm6627795f8f.84.2025.03.14.14.53.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 14 Mar 2025 14:53:37 -0700 (PDT) Message-ID: <20356709-e7ef-405c-b270-a713233ce452@redhat.com> Date: Fri, 14 Mar 2025 22:53:36 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 3/5] mm: Remove references to folio in split_page_memcg() To: "Matthew Wilcox (Oracle)" , Andrew Morton Cc: linux-mm@kvack.org, Johannes Weiner , Michal Hocko , Roman Gushchin , Shakeel Butt , Muchun Song , Zi Yan References: <20250314133617.138071-1-willy@infradead.org> <20250314133617.138071-4-willy@infradead.org> 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: <20250314133617.138071-4-willy@infradead.org> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: iL1lLVv5BmvdTO_RtzZ9VZ9p3UUr4OkjMCBbmRRakxw_1741989218 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 719AF40002 X-Stat-Signature: zkm9yhp3ejjro8y5himgjtzgammmkc5w X-HE-Tag: 1741989221-445041 X-HE-Meta: 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 suxgiVve AjZi1cup+WDV0fe4noPrp7LyWOpfBn8ERfogeYtYjLDmBpsV1+RoO+0d+8chhiKHPHQvVcdGJM4FdKQUtdF9pNfV6g5kXk5F5+IcxWn4xLwy43/86F5yT+WrPhzQphce8G1RmY+oOB25/lG9SIcMtVAuBP8Z+E15odrfOwiON3luySSXbzYVBh1j3gcwtKS8LCKixVcP3nf+BiXVl+uB8siAnQ722s/XVSllFizMWzZ7EuqMWaRecCocN/t5HeLJIfJufEWoq6tJtFlLZehSR2pxx6Jql6+zQVwkxGiNWPpKCfJpgAzrDTCSrgGt1pUE18lbQ5+XV1swgSdI+ipqcX72MZCd0TG5nGxdJu4ND6E51BvbqHptvP+VfgMs3Ia/cLasmzMtNqH7FwjLwIWS9BtTfrBcOpMQewVE4y5iqc0Izyk7IMq+wX9WPyKIDhrOdkXSD 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 14.03.25 14:36, Matthew Wilcox (Oracle) wrote: > We know that the passed in page is not part of a folio It would be great if we would have a way to assert that. ... but I'm afraid that has to wait for the memdesc split. -- Cheers, David / dhildenb