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 8136EFD064E for ; Wed, 11 Mar 2026 08:09:58 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id B414E6B0089; Wed, 11 Mar 2026 04:09:57 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id AF8E66B008A; Wed, 11 Mar 2026 04:09:57 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 9D1736B008C; Wed, 11 Mar 2026 04:09:57 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 79F456B0089 for ; Wed, 11 Mar 2026 04:09:57 -0400 (EDT) Received: from smtpin08.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay08.hostedemail.com (Postfix) with ESMTP id 1BB161406F8 for ; Wed, 11 Mar 2026 08:09:57 +0000 (UTC) X-FDA: 84533058834.08.ADDF81E Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf13.hostedemail.com (Postfix) with ESMTP id 3557220007 for ; Wed, 11 Mar 2026 08:09:55 +0000 (UTC) Authentication-Results: imf13.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=YLFscuv2; spf=pass (imf13.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=1773216595; 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=dlmBALjooZ0XsASQSjyH4mHZI9y8l1c4liikiV7dUtw=; b=qbpTxPqKcUX1O1GuhLNdvKS4viY5Ht/b0PINQTtTzQjVUTDucFriR2wp54rFZC7hzoZhfd isGndq8ZApBpLGtK8idJpXzKxZO3C4OJDUGUBz48KIZZ9JcPzdUEhs8LMR/8WjM7IpDgLC WdkZbKe2Zhwsv2xvGP96vWxrwymzji8= ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1773216595; a=rsa-sha256; cv=none; b=OGyn61L3uJgfe2HJl6P7jSXwN11OiIYXR1RC4856TfNaO8Q575m1DRcD78VCrInGgqVEat SNc2w9Y+k5sBm908utqUCjZXH6bHZoaVP3f2T1jcgwPRMo4v6+XeRMlQfXU3Xk6dRDWcso bovtIehgrpkSkPVuJsDde8i7Vzq2fDk= ARC-Authentication-Results: i=1; imf13.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=YLFscuv2; spf=pass (imf13.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 (transwarp.subspace.kernel.org [100.75.92.58]) by sea.source.kernel.org (Postfix) with ESMTP id 19321443F1; Wed, 11 Mar 2026 08:09:54 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0EF97C2BC9E; Wed, 11 Mar 2026 08:09:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1773216593; bh=Ev+RupPFx3vFthuT0C4F0wFHzLiDXKrbll1RNkDERZo=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=YLFscuv28t6jNAc42r7OavZhQeZvSUNStqr4Q7RFSOURjF6F4a+qrM3dZ18dhGWkF X3Q4wgVwkGzwZkdxpQkPksaXlYEI8vwMn3WBd/AVKeZc7kSwFZpu8HDj2NZbjH1jbC WKOonDy7O7ApDlcBH0pscWiPe+jDN7F4/VFe/CzIqaHf99gDDkESZx8I6jSIUfK7mB vG88BGnoCznJZICI1miWkoS/rI+HFCZyFlD9hIRhLm8jzSqpvneI9JCyoGKq0Purxu R+xWoOWF3J7Vf2YLrhnt5/4zPBse4v00ORNEvkDANUHfMoFc/3iG9OcAInOkA21TE0 J0V3p3DYTNXtg== Message-ID: Date: Wed, 11 Mar 2026 09:09:38 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v1 04/16] mm/memory: simplify calculation in unmap_mapping_range_tree() To: "Lorenzo Stoakes (Oracle)" Cc: linux-kernel@vger.kernel.org, "linux-mm @ kvack . org" , Andrew Morton , Lorenzo Stoakes , "Liam R. Howlett" , Vlastimil Babka , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jann Horn , Pedro Falcato , David Rientjes , Shakeel Butt , "Matthew Wilcox (Oracle)" , Alice Ryhl , Madhavan Srinivasan , Michael Ellerman , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , Jarkko Sakkinen , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Greg Kroah-Hartman , =?UTF-8?Q?Arve_Hj=C3=B8nnev=C3=A5g?= , Todd Kjos , Christian Brauner , Carlos Llamas , Ian Abbott , H Hartley Sweeten , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , David Airlie , Simona Vetter , Jason Gunthorpe , Leon Romanovsky , Dimitri Sivanich , Arnd Bergmann , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Peter Zijlstra , Arnaldo Carvalho de Melo , Namhyung Kim , Andy Lutomirski , Vincenzo Frascino , Eric Dumazet , Neal Cardwell , "David S. Miller" , David Ahern , Jakub Kicinski , Paolo Abeni , Miguel Ojeda , linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-s390@vger.kernel.org, linux-sgx@vger.kernel.org, intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org, linux-rdma@vger.kernel.org, bpf@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, rust-for-linux@vger.kernel.org, x86@kernel.org References: <20260227200848.114019-1-david@kernel.org> <20260227200848.114019-5-david@kernel.org> <6c6bf2d6-bc0f-4721-a57d-6b9c5f2a5c66@lucifer.local> 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: <6c6bf2d6-bc0f-4721-a57d-6b9c5f2a5c66@lucifer.local> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Rspam-User: X-Stat-Signature: fsjoesotw86x4sgnqt7wdzgphdqnm9zr X-Rspamd-Queue-Id: 3557220007 X-Rspamd-Server: rspam03 X-HE-Tag: 1773216595-108813 X-HE-Meta: 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 U41Kef8f 3RpjNBketWukdRGbklsuh5ywmhfkksnCnc2S592ooAyjl6RAI+Ndd/y3Lbs+ApZ2+2x8eEUlK7sQkoXgc3r/T3dL+fIANIfpoz6zIsPmJ4CQvY7up0j1wTKCmDUJZKvav+sZtGyuGoNl1RhXx7MRlvIFCx4BsHDOOLRRbiRq5sECOdzb0LTNjm5aAuWTUROG0Z3mAd9Yjakzm5r0PU3HIA57XVf7EekddkGeCDyvxslghiKw5+6O7XIZPDEllxcycP5LS0T4hB/6jYLoFBYqqqOPK+2j0cdQFumSnVuFduP09Fp8D+HiKkK/IZA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > >> - start = ((zba - vba) << PAGE_SHIFT) + vma->vm_start; >> - size = (zea - zba + 1) << PAGE_SHIFT; >> + const pgoff_t start_idx = max(first_index, vma->vm_pgoff); >> + const pgoff_t end_idx = min(last_index, vma_last_pgoff(vma)) + 1; > > I guess since 'end' is by-convention the +1 of last this is fine Exactly, the calculation itself is not changed. The +1 was previously hiding inside the "(zea - zba + 1)" Thanks! -- Cheers, David