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b=en+lj1NQyU2riV2YMG3OrBAZImNntuSsETLs3TvxmI0ve6b5krVTdewONMfFCpdg1 lKoBQo+6FLdXvJoi3OYuNi8OQDUAm7//l70JQ1u8ENmM053tdaY+Riek//GGNSS6LO wlbG+r3mrA+oBtaF+ovFjO8rqp8GXZKRE5ZRs+plwgDlHn+fpmWV1cPz54HaqreYST wIeb7uyyLB5ACr+QNT6OG1vDZm8hBIQVi326j5VK73/4bQyoqTLOQi8PYovn9HOy52 Ah0MSUR4c7oOamuxxSg3ppzUIT4s2Y27x7vRJT3VUnTfFxVxKTFgfLFRBlHJcqduoP qIQ7PnTr5BnRA== Message-ID: Date: Sat, 31 Oct 2026 10:42:09 +0100 X-Archived-By: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 01/47] mm/mglru: don't use stack pointers when walking PUD and PMD tables To: Lance Yang , muchun.song@linux.dev, kasong@tencent.com, ridong.chen@linux.dev, baohua@kernel.org, sj@kernel.org Cc: hannes@cmpxchg.org, mhocko@kernel.org, qi.zheng@linux.dev, shakeel.butt@linux.dev, ljs@kernel.org, axelrasmussen@google.com, yuanchu@google.com, weixugc@google.com, baoquan.he@linux.dev, baolin.wang@linux.alibaba.com, liam@infradead.org, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, kees@kernel.org, peterz@infradead.org, jannh@google.com, pfalcato@suse.de, hughd@google.com, pasha.tatashin@soleen.com, pratyush@kernel.org, willy@infradead.org, jack@suse.cz, ziy@nvidia.com, riel@surriel.com, harry@kernel.org, apopple@nvidia.com, nico.pache@linux.dev, ryan.roberts@arm.com, dev.jain@arm.com, usama.arif@linux.dev, kas@kernel.org, matthew.brost@intel.com, jhubbard@nvidia.com, peterx@redhat.com, will@kernel.org, aneesh.kumar@kernel.org, npiggin@gmail.com, osalvador@suse.de, minchan@kernel.org, xu.xin@linux.dev, chengming.zhou@linux.dev, chrisl@kernel.org, shikemeng@huaweicloud.com, nphamcs@gmail.com, youngjun.park@lge.com, gourry@gourry.net, joshua.hahnjy@gmail.com, rakie.kim@sk.com, ying.huang@linux.alibaba.com, jgg@ziepe.ca, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kexec@lists.infradead.org, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-cxl@vger.kernel.org, josef@toxicpanda.com, stable@vger.kernel.org, usama.anjum@arm.com References: <6FACF8FF-F943-45C8-BDFD-3AFB5C060E0A@linux.dev> <20261031055838.60138-1-lance.yang@linux.dev> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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 B3JfpUqcWwE7vUaYrHG1nw54pLUoPG6sAA7Mehl3nd4pZUALHwARAQABzS5EYXZpZCBIaWxk ZW5icmFuZCAoQ3VycmVudCkgPGRhdmlkQGtlcm5lbC5vcmc+wsGQBBMBCAA6AhsDBQkmWAik AgsJBBUKCQgCFgICHgUCF4AWIQQb2cqtc1xMOkYN/MpN3hD3AP+DWgUCaYJt/AIZAQAKCRBN 3hD3AP+DWriiD/9BLGEKG+N8L2AXhikJg6YmXom9ytRwPqDgpHpVg2xdhopoWdMRXjzOrIKD g4LSnFaKneQD0hZhoArEeamG5tyo32xoRsPwkbpIzL0OKSZ8G6mVbFGpjmyDLQCAxteXCLXz ZI0VbsuJKelYnKcXWOIndOrNRvE5eoOfTt2XfBnAapxMYY2IsV+qaUXlO63GgfIOg8RBaj7x 3NxkI3rV0SHhI4GU9K6jCvGghxeS1QX6L/XI9mfAYaIwGy5B68kF26piAVYv/QZDEVIpo3t7 /fjSpxKT8plJH6rhhR0epy8dWRHk3qT5tk2P85twasdloWtkMZ7FsCJRKWscm1BLpsDn6EQ4 jeMHECiY9kGKKi8dQpv3FRyo2QApZ49NNDbwcR0ZndK0XFo15iH708H5Qja/8TuXCwnPWAcJ DQoNIDFyaxe26Rx3ZwUkRALa3iPcVjE0//TrQ4KnFf+lMBSrS33xDDBfevW9+Dk6IISmDH1R HFq2jpkN+FX/PE8eVhV68B2DsAPZ5rUwyCKUXPTJ/irrCCmAAb5Jpv11S7hUSpqtM/6oVESC 3z/7CzrVtRODzLtNgV4r5EI+wAv/3PgJLlMwgJM90Fb3CB2IgbxhjvmB1WNdvXACVydx55V7 LPPKodSTF29rlnQAf9HLgCphuuSrrPn5VQDaYZl4N/7zc2wcWM7BTQRVy5+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: <20261031055838.60138-1-lance.yang@linux.dev> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspamd-Queue-Id: 629FF20005 X-Stat-Signature: 1g4w15uix5y1u7pjscq8kok4s7b4gq5a X-Spam-Status: No, score=-7.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_PASS,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=4.0.1 X-Rspam-User: X-Rspamd-Server: rspam09 X-HE-Tag: 1793439749-73782 X-HE-Meta: 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 vC2Z+T0p TMSkZtuwKfOivMgzCsMKApHCVmD6cL0JFL2koj2fBsx8RorJ6DEePi/XEft+qs6/syHbEd576Yxlsa1HA98DRAeawTMsh30ZYh5E8igbK29e4XHh8DTsexq3/N74RNvhw1jB55bJiHpQsrKN//MdRxsv9TnMT1qh/bal93+6ZD6lXmib8jLOcwj0m02BAPQUnjEYXchkSY5Ra7KAEDxpxhhXZglOvVbKdB0tdJALKwFMsbFH9x3xmBbKYy3ESSG85pQniDiFknTxJpEJ+bqU8Tf0anMj0XnCvQxsJ88rJarRT6qSYre/CmKiymwsVDZ7nDWzgJMMN8wk7SzQ= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 On 10/31/26 06:58, Lance Yang wrote: > > On Sat, Oct 31, 2026 at 09:46:37AM +0800, Muchun Song wrote: >> >> >>> >>> >>> >>> Agreed. FWIW, I think Barry Song and Kairui Song would be good candidates >>> for the maintainer role. >> >> +1 >> >> It would be great if they could take this over. > > +1 from me too ;) > > They both have been really active on MGLRU and doing great work for quite > a while. No doubt they'll continue to do so :D Fully agreed, we really need some people familiar with this code to help maintain it, and Kairu and Barry have most experience on this. Just a note that I also don't want to pressure into such a role (which comes with responsibility). -- Cheers, David