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[2003:cb:c749:6600:b73a:466c:e610:686]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4364b0566f1sm63635575e9.2.2024.12.19.08.33.33 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 19 Dec 2024 08:33:34 -0800 (PST) Message-ID: <9d4efc2e-56d9-4786-9ccb-ecd15f34f3e7@redhat.com> Date: Thu, 19 Dec 2024 17:33:32 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/2] s390: Remove uses of page->index To: "Matthew Wilcox (Oracle)" , Claudio Imbrenda Cc: linux-mm@kvack.org, linux-s390@vger.kernel.org References: <20241219162252.1025317-1-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: <20241219162252.1025317-1-willy@infradead.org> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: W16yw5OA-6M-J1Xh5Fmdj54l9wTyypcC677S5tLl_4s_1734626018 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: BD3AE180019 X-Rspamd-Server: rspam12 X-Stat-Signature: p6ipzjbn6gofxtzb6ttrbkc9uqt8fasf X-Rspam-User: X-HE-Tag: 1734625997-644324 X-HE-Meta: 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 kdiTkvc6 WgOGk1Gd3x+WLLb2WaK/tjs/IhIsOmAzN6ooGIJP79H0b35ly5fblXU9ncS58Ws+xe5GMN+EHaoUDFP1+oasPIZuL6swxQH0AEjX+IvcHAeWsSnc71UMmDB7dPHBMwvHpN2JTy8C8nRzdJ3CU2XmADZVUKSj7BobKedUu7EUFXXe1odmA+FbjQ1W24SPSgnVVtSqPJ91IreuHSJ0YXLBWp94c1+PVc+PYRLwoGapEb9tfPXMFy9BFgMx1RglfqUU+ukPdX1uaeLxalDtfSAsaqPNDfULms1Y7mJ+JN2PNhvPhej7ZHWvS6HxYTTE2bclz42YTSQfVFGWcfdgmzwlxNBWHNnbgvmOMYKYJDuktI5IeQnImovY6Ow4Tc7yd9/VaLAJyjsZfQAASvdA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000143, 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 19.12.24 17:22, Matthew Wilcox (Oracle) wrote: > These two patches compile ... I can promise nothing more than that. > > David suggested to me that the gmap code really should be using ptdesc, > and I think I agree with him. The vsie code looks quite different > and probably shouldn't be using a ptdesc, but we can use page->private > instead of page->index. It's not yet clear to me if we'll ever manage > to get rid of page->private. Just curious, does that mean that memdesc would always contain these additional 8 bytes? -- Cheers, David / dhildenb