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[80.187.83.110]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-46e7234e5fdsm144553375e9.6.2025.10.05.23.34.36 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 05 Oct 2025 23:34:37 -0700 (PDT) Message-ID: Date: Mon, 6 Oct 2025 08:34:35 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] mm/dirty: Replace READ_ONCE() with pudp_get() To: Anshuman Khandual , linux-mm@kvack.org Cc: Andrew Morton , linux-kernel@vger.kernel.org References: <20251006055214.1845342-1-anshuman.khandual@arm.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 ZW5icmFuZCA8ZGF2aWRAcmVkaGF0LmNvbT7CwZoEEwEIAEQCGwMCF4ACGQEFCwkIBwICIgIG FQoJCAsCBBYCAwECHgcWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaJzangUJJlgIpAAKCRBN 3hD3AP+DWhAxD/9wcL0A+2rtaAmutaKTfxhTP0b4AAp1r/eLxjrbfbCCmh4pqzBhmSX/4z11 opn2KqcOsueRF1t2ENLOWzQu3Roiny2HOU7DajqB4dm1BVMaXQya5ae2ghzlJN9SIoopTWlR 0Af3hPj5E2PYvQhlcqeoehKlBo9rROJv/rjmr2x0yOM8qeTroH/ZzNlCtJ56AsE6Tvl+r7cW 3x7/Jq5WvWeudKrhFh7/yQ7eRvHCjd9bBrZTlgAfiHmX9AnCCPRPpNGNedV9Yty2Jnxhfmbv Pw37LA/jef8zlCDyUh2KCU1xVEOWqg15o1RtTyGV1nXV2O/mfuQJud5vIgzBvHhypc3p6VZJ lEf8YmT+Ol5P7SfCs5/uGdWUYQEMqOlg6w9R4Pe8d+mk8KGvfE9/zTwGg0nRgKqlQXrWRERv cuEwQbridlPAoQHrFWtwpgYMXx2TaZ3sihcIPo9uU5eBs0rf4mOERY75SK+Ekayv2ucTfjxr Kf014py2aoRJHuvy85ee/zIyLmve5hngZTTe3Wg3TInT9UTFzTPhItam6dZ1xqdTGHZYGU0O otRHcwLGt470grdiob6PfVTXoHlBvkWRadMhSuG4RORCDpq89vu5QralFNIf3EysNohoFy2A LYg2/D53xbU/aa4DDzBb5b1Rkg/udO1gZocVQWrDh6I2K3+cCs7BTQRVy5+RARAA59fefSDR 9nMGCb9LbMX+TFAoIQo/wgP5XPyzLYakO+94GrgfZjfhdaxPXMsl2+o8jhp/hlIzG56taNdt VZtPp3ih1AgbR8rHgXw1xwOpuAd5lE1qNd54ndHuADO9a9A0vPimIes78Hi1/yy+ZEEvRkHk /kDa6F3AtTc1m4rbbOk2fiKzzsE9YXweFjQvl9p+AMw6qd/iC4lUk9g0+FQXNdRs+o4o6Qvy iOQJfGQ4UcBuOy1IrkJrd8qq5jet1fcM2j4QvsW8CLDWZS1L7kZ5gT5EycMKxUWb8LuRjxzZ 3QY1aQH2kkzn6acigU3HLtgFyV1gBNV44ehjgvJpRY2cC8VhanTx0dZ9mj1YKIky5N+C0f21 zvntBqcxV0+3p8MrxRRcgEtDZNav+xAoT3G0W4SahAaUTWXpsZoOecwtxi74CyneQNPTDjNg azHmvpdBVEfj7k3p4dmJp5i0U66Onmf6mMFpArvBRSMOKU9DlAzMi4IvhiNWjKVaIE2Se9BY FdKVAJaZq85P2y20ZBd08ILnKcj7XKZkLU5FkoA0udEBvQ0f9QLNyyy3DZMCQWcwRuj1m73D sq8DEFBdZ5eEkj1dCyx+t/ga6x2rHyc8Sl86oK1tvAkwBNsfKou3v+jP/l14a7DGBvrmlYjO 59o3t6inu6H7pt7OL6u6BQj7DoMAEQEAAcLBfAQYAQgAJgIbDBYhBBvZyq1zXEw6Rg38yk3e EPcA/4NaBQJonNqrBQkmWAihAAoJEE3eEPcA/4NaKtMQALAJ8PzprBEXbXcEXwDKQu+P/vts IfUb1UNMfMV76BicGa5NCZnJNQASDP/+bFg6O3gx5NbhHHPeaWz/VxlOmYHokHodOvtL0WCC 8A5PEP8tOk6029Z+J+xUcMrJClNVFpzVvOpb1lCbhjwAV465Hy+NUSbbUiRxdzNQtLtgZzOV Zw7jxUCs4UUZLQTCuBpFgb15bBxYZ/BL9MbzxPxvfUQIPbnzQMcqtpUs21CMK2PdfCh5c4gS sDci6D5/ZIBw94UQWmGpM/O1ilGXde2ZzzGYl64glmccD8e87OnEgKnH3FbnJnT4iJchtSvx yJNi1+t0+qDti4m88+/9IuPqCKb6Stl+s2dnLtJNrjXBGJtsQG/sRpqsJz5x1/2nPJSRMsx9 5YfqbdrJSOFXDzZ8/r82HgQEtUvlSXNaXCa95ez0UkOG7+bDm2b3s0XahBQeLVCH0mw3RAQg r7xDAYKIrAwfHHmMTnBQDPJwVqxJjVNr7yBic4yfzVWGCGNE4DnOW0vcIeoyhy9vnIa3w1uZ 3iyY2Nsd7JxfKu1PRhCGwXzRw5TlfEsoRI7V9A8isUCoqE2Dzh3FvYHVeX4Us+bRL/oqareJ CIFqgYMyvHj7Q06kTKmauOe4Nf0l0qEkIuIzfoLJ3qr5UyXc2hLtWyT9Ir+lYlX9efqh7mOY qIws/H2t In-Reply-To: <20251006055214.1845342-1-anshuman.khandual@arm.com> X-Mimecast-Spam-Score: 0 X-Mimecast-MFC-PROC-ID: Uz-R1pY3o7NrCpNgB3_mB2UtEuPey-gkWKGfLrhUuvg_1759732479 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: 1897640004 X-Stat-Signature: mpgzfxx6qbuigzfzs7nk6gxboceq9kf8 X-HE-Tag: 1759732481-20094 X-HE-Meta: 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 wOzkKulv GQDyW+qfGI7MIF8fj/LwMpfgyVSZBFwX9gxjANnWDQM2Amf5Od9EeE6ZcvsC71A9LLGqjQW94axqbhd+5pYKNoptweivUfv3LZqw1aGT1WJ3ybVvbOWq1azmKnl4yG5rximyXhaliQ07JDM1v41v2QhDIfAcglPRtdxmMyJg2/Tt89/g/VyLpi2J2BMZsH0SNh2Tl/5nyrGEL37t8SBgh2/QgfA== 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 06.10.25 07:52, Anshuman Khandual wrote: > Replace READ_ONCE() with a standard page table accessor i.e pudp_get() that > anyways defaults into READ_ONCE() in cases where platform does not override > > Cc: Andrew Morton > Cc: David Hildenbrand > Cc: linux-mm@kvack.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Anshuman Khandual > --- Acked-by: David Hildenbrand -- Cheers David / dhildenb