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[2003:cb:c743:7b00:745e:8663:4f85:318a]) by smtp.gmail.com with ESMTPSA id u4-20020a05600c138400b0040c03c3289bsm4750029wmf.37.2023.12.21.14.14.57 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 21 Dec 2023 14:14:57 -0800 (PST) Message-ID: Date: Thu, 21 Dec 2023 23:14:56 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [linux-next:master] [mm] bbcbf2a3f0: kernel_BUG_at_mm/memory.c To: Matthew Wilcox Cc: Andrew Morton , Oliver Sang , oe-lkp@lists.linux.dev, lkp@intel.com, Linux Memory Management List , linux-kernel@vger.kernel.org References: <202312192319.fa8f5709-oliver.sang@intel.com> <20231220141135.cb4241442b657104f0aeae34@linux-foundation.org> <20231221135833.92b8b2a97b28ad0545977f6c@linux-foundation.org> <6a8f2110-fa91-4c10-9eae-88315309a6e3@redhat.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: 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-Rspam-User: X-Stat-Signature: c76ygdupwbunko6up5g5zxg74zode6di X-Rspamd-Server: rspam07 X-Rspamd-Queue-Id: 6A05380020 X-HE-Tag: 1703196902-6872 X-HE-Meta: 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 4+8UFnq7 o6HS4O4rHKrECIqgmRzVZXSfHc8ItJWDmyOHVq89UlyrZGtfnb0kUR57FCQgmkmjzuHZiZslSmKHJT9JHkg5BbXIJ3TPXArSGpQM6AvPV7B8LIlNJO8+CWA+VKZfxki0evq+MB6hCBGm9t9fwiQzWdSs5RGVZFlf9DFoye4k+7jZ3P2fyqYeahR1k7JgzNaX0/UEHt0quJ/KJUvIbc8xXAE+CYyqHR844jbOGMTG2pq9L+nFyKHses6IvVEL2GbF7ISyWPAQyLaNQfEkvBzVPEnB8K3kH4wuLuvm9tFKq+0wl4HQ6VG867ROzi/6WNYln6Pxm1GjwTXB/+76HXt/aN/vvjXV4qcJeuxurAsI35PBs1I2VkEtdOmxE2jpydJEh8y3lJuy9cDGwWmw1GVsS1vIwplzrLNLknY1Lv9ee8uSrYjT8uVTM8mL9Nj0v7vdiV5V/spL3ulj5B6WFJ/wz2R4qpQ== 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 21.12.23 23:13, Matthew Wilcox wrote: > On Thu, Dec 21, 2023 at 11:07:21PM +0100, David Hildenbrand wrote: >> Subject: [PATCH] Fixup: mm: convert ksm_might_need_to_copy() to work on folios >> >> We must only adjust the page if the folio changed. Otherwise, if we >> had a large folio in the swapcache and the folio didn't change, we'd >> suddenly change the page to-be-mapped. > > Heh, I was expecting you to be done for the day ;-) I was expecting that myself, but here I am ... :) -- Cheers, David / dhildenb