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t=1783496703; bh=POZPZ89MWOaT5FEim7vrUPeYZf08zWwArhgwMnXgOHE=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=SeZd110P4OKPISlm2apuy1pgeZh0oMp5gVEEsiC+4sACbztpDXqFE3beaXQMAPtvT MZKo8EwOtGT5fvQEjZ9hA1ONkKIDJwRq+QuYzXrg6dlvi2HdBORBw+5At8SK5hP9Su MCqK6NWO5VV0KFNRj+zCpUN/C/IJgwfceT7EOp8hVFpO1bNtL3YUbyuBfmXs4oQfWz UYBTzhZQWzhjMwgkTY5ndNeZgJTGkqRAQXABDNXzZ0FV7vf2R0TsJRyHzMdMM5YwUm 12Ewk3x7+Xnr3O0rsWwpeEKytqlRWmVsQzQk2o+1SaSIrezpW3dpcJgOtQOa9C5i76 /STTjQWyerFIg== Message-ID: <7ee0eb5c-619c-4c3e-86d8-0c963d94df76@kernel.org> Date: Wed, 8 Jul 2026 09:45:00 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v2 00/13] mm: rework anon_vma and remove anon_vma_chain To: Hillf Danton Cc: tao , linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20260707063308.29176-1-tao.wangtao@honor.com> <20260708043751.421-1-hdanton@sina.com> 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: <20260708043751.421-1-hdanton@sina.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Rspamd-Server: rspam11 X-Rspamd-Queue-Id: 0B1D418000D X-Stat-Signature: nwtpaz5pz4doa5hq1st3bbzgpiek86e9 X-HE-Tag: 1783496703-922223 X-HE-Meta: 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 OqS/zFv9 YHx0UuBzGWZs00ME4Zp47iBPozwWAGUmA46n0AVWrWuPhWpgVj/IBWVkEYcSn2MizZGCc70wUr7rJuZqFNTsnIXPG/+v3nGm+fH//uq08cIZYH0Sd+5a/imhpXakByfDNdP/eAxxWJOdNjMaErHCMVtihMN5x4uM69rYAUynpococTCwfeR+qxL6Bt5gqDRsB9P3dwigRE+iBNddEuZ6B8bqmU7BFdiXgn1SO/yVtAqSS72mmJXZWowl3dSDLNPRDZ2bBuzIfIgUsZEe7AwbEPtcu/4e4VHhax6ZHszqoVisUToIxLpnZre5sMg== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 7/8/26 06:37, Hillf Danton wrote: > On Tue, 7 Jul 2026 09:01:04 +0200 "David Hildenbrand (Arm)" wrote: >> On 7/7/26 08:32, tao wrote: >>> Hi all, >>> >>> Since v1 was relatively complex and difficult to extend, this version >>> adopts a simpler anon_vma implementation approach. >> >> I really hate to repeat myself, but you seemed to have missed my main point [1] >> >> "Lorenzo has been hard at work exploring various design options (and I'm afraid >> he might be one of the 3 people on this planet that understand anon_vma in full >> detail), so I suggest we wait for a redesign proposal from him and see if that >> is doable?" >> > Given that no numabalance could land upstream without horse racing [2], what > prevents Lorenzo from becoming another (scarlet? raven black?) lipstick given mglru? Did you ever look at anon_vma, or are you just joining a discussion to say some words nobody understands, really? :) -- Cheers, David