From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 871BCC5B572 for ; Tue, 11 Aug 2026 16:48:36 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 888306B00A0; Tue, 11 Aug 2026 12:48:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 813196B00A2; Tue, 11 Aug 2026 12:48:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 6DAE16B00A3; Tue, 11 Aug 2026 12:48:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 422E66B00A0 for ; Tue, 11 Aug 2026 12:48:35 -0400 (EDT) Received: from smtpin02.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id C67C2A0CA9 for ; Tue, 11 Aug 2026 16:48:34 +0000 (UTC) X-FDA: 85089572148.02.993C449 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf31.hostedemail.com (Postfix) with ESMTP id EFB1220004 for ; Tue, 11 Aug 2026 16:48:32 +0000 (UTC) Authentication-Results: imf31.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=AIZxIFAm; spf=pass (imf31.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1786466913; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=9N4Q1jk4C+Off88XGaOwtGooGJBpZMvX648V30zsvDQ=; b=DmVR4vJ+nKWwQi/wLFzCkcAslRw7XzRnsFzd2ERr0Am0wvh0Q6/Wj/N7wROwuri9RBbPkm gwHMEq7cnEph0dBTQENi/eKfKJ8MKDhUhwd4PqgYaVWq/Pu8MP7t/FJ++HIQvGE4rNf8HE G6fXKomuqJFDeczv+5i++F4h2xGcgNA= ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1786466913; b=nXme0f0i2Pq1sbLbvmx4afpJW6xQjsveDCKyE+O8cToz+gcssQkNhiIxuFDeBV/V8mZCBb eSnVba+Mud6Xb3AdzvwjP2eeqAYpY2ofIyfxITJzhmSwMlLm3ZFdrH3bPYf4qFj8ZWsRvd o2IrGDQ0hZ3tkvQ9UUMwKHcZJoRAWF0= ARC-Authentication-Results: i=1; imf31.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=AIZxIFAm; spf=pass (imf31.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 145034353A; Tue, 11 Aug 2026 16:48:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 89AC81F000E9; Tue, 11 Aug 2026 16:48:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1786466912; bh=9N4Q1jk4C+Off88XGaOwtGooGJBpZMvX648V30zsvDQ=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=AIZxIFAmKurbVhT2yKjRNb4cRvhB+aLR4EE3v66FDsMcvJDyndNDawSimnPvQAVq5 qzmttuzuV93lAlfyPshLQv9WnCp/gf/T/afoUa/9rA2W8cIbOzq5pgzRQv7ULKb6Xv RwXF08n3j5I564owX4uerUmLiYkuavi9CI99q5xp5NVAHLampqcAvfk+QbjXLhf9Ri J7mkamacG9CxXzFsa3mj+eOwCtMl0vCzaIwFewUqPwZgdbwNufyqjMkdEUtSqYHpmZ EE2XRNaOwl2BZeh/j8BC3xM7acgjaKgABCXDUhKs+Gas6yfxQsp1tPOtCFW0MyzZPT 2tFeIuIhqH/uQ== Message-ID: <4382368c-d0ef-4361-957d-78bc1edf60e2@kernel.org> Date: Tue, 11 Aug 2026 18:48:06 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v4 11/20] mm: clean up vma_address_end() To: "Lorenzo Stoakes (ARM)" , Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , "Matthew Wilcox (Oracle)" , Jan Kara , Miaohe Lin , Naoya Horiguchi , Rik van Riel , Harry Yoo , Lance Yang , Kees Cook , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Usama Arif , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Peter Xu , Xu Xin , Chengming Zhou , Arnd Bergmann , Greg Kroah-Hartman , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Sven Schnelle , Alex Deucher , =?UTF-8?Q?Christian_K=C3=B6nig?= , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Boris Brezillon , Steven Price , Liviu Dudau , Huang Rui , Matthew Auld , =?UTF-8?Q?Thomas_Hellstr=C3=B6m?= , Rodrigo Vivi , Masami Hiramatsu , Oleg Nesterov , Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark , Jason Gunthorpe , John Hubbard , Muchun Song , Oscar Salvador , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Youngjun Park Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, amd-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, intel-xe@lists.freedesktop.org, linux-perf-users@vger.kernel.org, linux-trace-kernel@vger.kernel.org References: <20260806-b4-scalable-cow-virt-pgoff-v4-0-ab318a350404@kernel.org> <20260806-b4-scalable-cow-virt-pgoff-v4-11-ab318a350404@kernel.org> 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: <20260806-b4-scalable-cow-virt-pgoff-v4-11-ab318a350404@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: no3hybpw48cc5irif8ys56fbo4qe8k5c X-Rspamd-Server: rspam01 X-Rspamd-Queue-Id: EFB1220004 X-HE-Tag: 1786466912-538758 X-HE-Meta: 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 x7EoTEBL kJWo/aqBYlru0RNHGHOXddlWKHzW6yVBx2p5czvw+crZC/TFqscl0v/NbJ1A3iRxj7WSOXcU6jfwz1A6+LyrsO8tvP84v8/qzyQIXXFSuTYhECaAqNe0NFL6coFHhpPOh7c3AzsN5eyxxNQ0jvFU1tZk4/qjI0CwWgZwUKpDAkIcxDmnEPBivpCJH5bITUeaAv8oT/loUzU1ak7L+XJJcyXeiB40e7TU40zCrEyflDlLtiB81y70fs4hV84aVOg6nH1JZ22sbIUt1TDQvRC/sIE2K8jkX7EjrlGr9L8HxU3qE3YA2Ax7my6MF1wMUegwVAsp2SyfcdMygQ3Vw2319RLJYkNCNBi2j12qZLbVewlkLk3wu+NzEZEQHo5U0P6+mdvwaUURc56YHv43QYCxv6EvcM7uxIrFXyFHkmuA8ilF8QtM= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 8/6/26 22:21, Lorenzo Stoakes (ARM) wrote: > vma_address_end() is a confusing function with a lot of moving parts so > clean it up prior to extending it for anon page indexed mappings. > > Const-ify some variables and establish pgoff_vma_start and pgoff_end > variables to clearly identify the page offset for the start of the VMA and > the end of the page offset range specified by the page walk. > > This simplifies the function significantly and lays the groundwork for a > future change to update this function to account for anonymously page > indexed folios. > > No functional change intended. > > Signed-off-by: Lorenzo Stoakes (ARM) > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David