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 37DE8CA5FD9 for ; Fri, 2 Oct 2026 06:55:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 36EC96B0092; Fri, 2 Oct 2026 02:55:29 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 31E546B0093; Fri, 2 Oct 2026 02:55:29 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 20D6E6B0095; Fri, 2 Oct 2026 02:55:29 -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 00C846B0092 for ; Fri, 2 Oct 2026 02:55:28 -0400 (EDT) Received: from smtpin28.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 77B27A6D4F for ; Fri, 2 Oct 2026 06:55:28 +0000 (UTC) X-FDA: 85276775136.28.37AF065 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf27.hostedemail.com (Postfix) with ESMTP id 999CC40002 for ; Fri, 2 Oct 2026 06:55:26 +0000 (UTC) Authentication-Results: imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=jcg3T8Lt; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf27.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1790924126; 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=ISzeg/djpEJgZuQfNd3fqeQR/RcIoDTgRKI00G7Zcuw=; b=Azo/XNwv0J+TDQ7aYJca1d53MWuJpZFQ2tM+gaT7AbHnnMyyYg0123FJ2rXO9aDbecvtCg zeq+1awzvVMp2HaIaylEsV41a3IU4bjsBPcjV0y3fWH8aRvPUNELFiOSCeQZtak6rg9sdA /AgS/eYVpLPmT9M9V0C1Til65Gc1iS0= ARC-Authentication-Results: i=1; imf27.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b=jcg3T8Lt; dmarc=pass (policy=quarantine) header.from=kernel.org; spf=pass (imf27.hostedemail.com: domain of david@kernel.org designates 172.234.252.31 as permitted sender) smtp.mailfrom=david@kernel.org ARC-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1790924126; b=7TrbZcw+aOXTKIXk/Zr8ouWRRnDQjkXJulT4NOhFxcu5sRDUg5i7vRIZW519ME7LmsJftq ebox2FvRORXxvK4qTEVjvkvC65FaAu2xgVE3GYHOIE/yOdrqtmureTDzwbGa90BTfbkQSr 7pvCvYQvzvdicovdOKBGgfOmdBaaq4I= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id C47EF41825; Fri, 2 Oct 2026 06:55:25 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA2B81F000FF; Fri, 2 Oct 2026 06:54:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1790924125; bh=ISzeg/djpEJgZuQfNd3fqeQR/RcIoDTgRKI00G7Zcuw=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=jcg3T8LtVGFeCP22PjJ5Kmv9ARB/xlyzs+V7VKXWrcGliXXGU0CUjthFJOOOSg0Hx 6CU6htfWrkq8uVkwnyN4p20qhOGNewwRU/UbFZx50g58zMqo9rZghxxOXE5Sgn4Byk cCtePOS4ForF7OdoDSH4CGhjCIkqhnRDQcxizGY2lVyeFq5pdQhwHHIXJGGnnpU5c5 f0rMdqdkNfLNmT6GRUD7iuUwxWsVvZ303YXTDcZkh980uO2TEGwYTNmDpVxNp4xXDJ MbMPkkMYN3WygH1pwmvSsevDkxgASGDEHdWFY8ljYW0NPayHu1k6zMXETsr4Yf+YHO xBkzjLjRmFNXA== Message-ID: <2c01f806-0428-4a96-85de-6a853605a537@kernel.org> Date: Fri, 2 Oct 2026 08:54:42 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 29/40] mm: drop some redundant checks around hugetlb VMAs To: "Lorenzo Stoakes (ARM)" , Andrew Morton , "Liam R. Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Jonathan Corbet , Greg Kroah-Hartman , Dennis Dalessandro , Jason Gunthorpe , Leon Romanovsky , Paul Moore , Stephen Smalley , Jaroslav Kysela , Takashi Iwai , Alexei Starovoitov , Daniel Borkmann , Andrii Nakryiko , Eduard Zingerman , Kumar Kartikeya Dwivedi , Zi Yan , Baolin Wang , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Kiryl Shutsemau , Doug Gilbert , "James E.J. Bottomley" , "Martin K. Petersen" , Jaya Kumar , Simona Vetter , Helge Deller , Sebastian Reichel , John Hubbard , Peter Xu , Masami Hiramatsu , Oleg Nesterov , Peter Zijlstra , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Rik van Riel , Harry Yoo , Juri Lelli , Vincent Guittot , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Will Deacon , "Aneesh Kumar K.V" , Nick Piggin , Arnd Bergmann , Muchun Song , Oscar Salvador , "Matthew Wilcox (Oracle)" , Jan Kara , Marc Zyngier , Oliver Upton , Catalin Marinas , Madhavan Srinivasan , Anup Patel , Paul Walmsley , Palmer Dabbelt , Albert Ou , Christian Borntraeger , Janosch Frank , Claudio Imbrenda , Alexander Gordeev , Gerald Schaefer , Heiko Carstens , Vasily Gorbik , "David S. Miller" , Andreas Larsson , Alexander Viro , Christian Brauner , Matthew Brost , Joshua Hahn , Rakie Kim , Byungchul Park , Gregory Price , Ying Huang , Alistair Popple , Chris Li , Kairui Song , Kemeng Shi , Nhat Pham , Baoquan He , Youngjun Park , Johannes Weiner , Qi Zheng , Shakeel Butt , Axel Rasmussen , Yuanchu Xie , Wei Xu , Chengming Zhou , Michal Hocko , Miklos Szeredi , Xu Xin Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-usb@vger.kernel.org, linux-rdma@vger.kernel.org, selinux@vger.kernel.org, linux-sound@vger.kernel.org, bpf@vger.kernel.org, linux-scsi@vger.kernel.org, linux-fbdev@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-trace-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arch@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, fuse-devel@lists.linux.dev References: <20260917-b4-mmap-prepare-vma-flag-sanify-v3-0-4583d8a23bca@kernel.org> <20260917-b4-mmap-prepare-vma-flag-sanify-v3-29-4583d8a23bca@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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(migrate_vma_setup() regains an explicit hugetlb test later in > the series, once VMA_SPECIAL_FLAGS is removed.) > > * hugetlb VMAs unconditionally set vma->vm_ops, so they are never > anonymous. > > * hugetlb VMAs do not set VMA_PFNMAP_BIT so checking for this is redundant. > > While we're here also drop a VM_BUG_ON() which the simplified check above > makes unreachable, and use the new VMA flag API. > > No functional change intended. > > Acked-by: Marc Zyngier > Signed-off-by: Lorenzo Stoakes (ARM) > --- Acked-by: David Hildenbrand (Arm) -- Cheers, David