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(p200300d82f121b005d6bdb26e2b70012.dip0.t-ipconnect.de. [2003:d8:2f12:1b00:5d6b:db26:e2b7:12]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-3a6e80f2670sm3983504f8f.49.2025.06.25.02.04.22 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 25 Jun 2025 02:04:23 -0700 (PDT) Message-ID: <4753c20a-1bbe-4c16-86b8-1b430860a91e@redhat.com> Date: Wed, 25 Jun 2025 11:04:21 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH RFC 11/14] mm: remove "horrible special case to handle copy-on-write behaviour" To: Oscar Salvador Cc: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, nvdimm@lists.linux.dev, Andrew Morton , Juergen Gross , Stefano Stabellini , Oleksandr Tyshchenko , Dan Williams , Alistair Popple , Matthew Wilcox , Jan Kara , Alexander Viro , Christian Brauner , Zi Yan , Baolin Wang , Lorenzo Stoakes , "Liam R. Howlett" , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato References: <20250617154345.2494405-1-david@redhat.com> <20250617154345.2494405-12-david@redhat.com> <5f4c0a45-f219-4d95-b5d7-b4ca1bc9540b@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-MFC-PROC-ID: HVhE8mTmwyWsyk6_UvgIif1Yb2XaL6QbKlpsySbCAvY_1750842267 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: 33f5ttct49jdde4wp5bjn9xywftwaoi5 X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 21370C0004 X-Rspam-User: X-HE-Tag: 1750842269-287866 X-HE-Meta: U2FsdGVkX19DDAvJA88gu67sTeDhBKjjZGe45DhwXgUYGJbX6v7AfyaRI4guBSSyGIqeSHrobLRPZwF+IixT/GjSpR6AT8166KJiZ/vwoIeraJ1K9bqdU7iYYpRUpXWU8Lj/OAPJofyqep8by9RJKqeuqLG2Ca4ncds+Ows5XbETNEyhJk9d6uhsnQt0axLdekY+P5OKkj/xqdvmbboyKUtT60UpUZFeVGiwI6UTD4CWeUjtJnsIfwRa+s9u3kY2TAh7JeXgSdFPWBWuXU5xHp/BY9aWW1oxxK/YVl9xct3A+vYalckhTMMfCqCbdhS2TmLal6F5tpMdMowQlaqD0PI8qMYsgpRR522o0K2Gwnw6sZDrNj//e0+xXqhWIlDKmzUKazFmIE07YokQTm7bbDbOI5VvnKEmQQtS33hwmJORSlH/W1Z6cPZFbWy3eWBS5Hk7RBdTaZ7sdMkMxi7JqwuPQ7hpUFyLm/w4k3oMdJR8pr2Cc8lizHx6/mnc5sVRlZ0MFqaqtNaOr4OoTF/lgymwgCTznVB81GFwH5rX9ifxsiDs3q65vyinysY7YwUs8g+tRSgyRZ1t5fXibuoeIrB0U/vc4BV2YNas3Os0ldZzTyh2nlnkXucvCIRzH9OI3cbNwxYsM2d/juXptIc3YzPHzDHp1YibyzGXJZ56UmZSwWkMh0lEdIs3Pzb/FmdCNjlQJuzCIe80r5l+voYyPmvlEgQcNOj4Qmz/w52suCH9/lvw9W+IdaQGk9LwfqV/7W+5RBB4pOE4Nw7Sn2MSrUXtNknT2B61X7EOZUKCM38MvLCCbcTUJaZq3Mq1zQaJ0WzcwwTSxLMOkCxJFvVqrWhKUl1MNhhW5ejOTCOb1P46XTbFFMxAg2RecS0hBNGBrVmCHnk+sNlvODNPXUadd6HiUFgy3FMxC58L/LLBl9etzDzXQ0iDMZ/sRCUtJ6XEw1s5WcEPncv4vmSaC8K vzpyGlHX ujvNhXYmn3LrUa0ARWZP+U7DaMXtD93c+jezZ0rZg45huM+Mu2CqDb9qVwOL6ffEQP7RVugVI2wi7ELwWA5ZgBMh+DUYEliiVHJ2XahL4EujWYOZwLH3R6HeyGBE5a8HwwwO29FnHX8wCo6DA5ZVN1S7z2d5LtWmEYam7fbcc11yeheiHrQ1VcDlTM67hAg/U9hXFstXJU+zHLqr/RzURXfbfLgihKSnrOtAAGccCPlpAfSMaTIV4APPbg/L5B13tuSCR3Syf0BglpupuxLqGll37e8SjjlWa+NkCDrNJarWQBHbuPqAzvPMmSpbuI2KcxNF0846OXlPFrfNrC0LAZF7l6jA+e2cg1dGFIX5DNzTw0/+TIfaQ3ShgizDMgsfsB9XZvq3ND4O6MfKtekc6zMtFIw== 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 25.06.25 11:02, Oscar Salvador wrote: > On Wed, Jun 25, 2025 at 10:47:49AM +0200, David Hildenbrand wrote: >> I'm still thinking about this patch here, and will likely send out the other >> patches first as a v1, and come back to this one later. > > Patch#12 depends on this one, but Patch#13 should be ok to review > If I ignore the 'addr' parameter being dropped, right? Yes, only #12 and #13 will be gone. #14 and #15 will simply have the "addr" parameter in the _pud() variant as well. -- Cheers, David / dhildenb