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 2FDA2CA9EDE for ; Mon, 12 Oct 2026 18:52:49 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 17EA86B0096; Mon, 12 Oct 2026 14:52:48 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 12FBF6B0098; Mon, 12 Oct 2026 14:52:48 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id F12AD6B00A1; Mon, 12 Oct 2026 14:52:47 -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 C70DC6B0096 for ; Mon, 12 Oct 2026 14:52:47 -0400 (EDT) Received: from smtpin16.hostedemail.com (lb01a-stub [10.200.18.249]) by unirelay06.hostedemail.com (Postfix) with ESMTP id 604F5A94E5 for ; Mon, 12 Oct 2026 18:52:47 +0000 (UTC) X-FDA: 85314870774.16.68CD040 Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) by imf28.hostedemail.com (Postfix) with ESMTP id 7E26BC0002 for ; Mon, 12 Oct 2026 18:52:45 +0000 (UTC) Authentication-Results: imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b="m0WRXH/l"; spf=pass (imf28.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-Seal: i=1; a=rsa-sha256; d=hostedemail.com; s=arc-20220608; cv=none; t=1791831165; b=BSh3K15sMi7Xj7y3yAT6LkA5HT2E8X7RDeQWuwGs//UJSwXOoldo03sVxDmwgonfnPqXjF S1YIe8zUhLrBd/5Cja2bBERZ/9eXEqOcryzZ+KprqhGxuPTWAJPnprS9aCjzeqlRvxnADP RGpNFU8hZzSQ5BNA5t/gkNKLldeFlKg= ARC-Authentication-Results: i=1; imf28.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20260515 header.b="m0WRXH/l"; spf=pass (imf28.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=1791831165; 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=JS5rAlbNo22qwtsGvE+A/Ou5uLAn4LHEBxkEtLv9fm4=; b=4GA0MLN2X7F40N3r+qD1dqtYFoaJaXDykiPSBHyYOHB+UcipYPL6hJg27fl+N1mQEdfMwh Slag7sE8HKHdGMHTbWu2SS6PffrqZtNIO6kMeTDT5R+09AyHoBbu5G2sXU6uqiE2092Lt1 MsJ7cDxy4LRU6nL0LZpnlNLK0AqCbfU= Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id C400B404EB; Mon, 12 Oct 2026 18:52:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 741911F0089B; Mon, 12 Oct 2026 18:52:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1791831164; bh=JS5rAlbNo22qwtsGvE+A/Ou5uLAn4LHEBxkEtLv9fm4=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=m0WRXH/lGiOPjKVxGePwu9PM4DBxUfPf8mpW/r+t73nEB4ofC+jExqVxZuSSyCuxU PD3XbbzWWtvD7+lTvQ6xsNEcjU9fooei2o1PVRT0U5yaGF3LE4miOE2lcxGpGnS+f3 dTiNe4ZHjWjMKBQ/83QDlAZaU1CiGGcPnwTZqi2Z1/GXnkE3taxcckXkF7h0u220Fr NScxBsv/ieFyXlvqOLGLpBLzqpR4+YkZ9hncI4napESKOdnb5dEDI4RfDa2EZt3h7I ySovDqvGx82lYI5mP1iagKu+WVxk0qJBOPBG7o0UK7QoI0vOVrh2fHUYlAdE7Ma9Kz TLgk090yWcxhA== Message-ID: <214514be-a935-485b-8925-07d84c1063f9@kernel.org> Date: Mon, 12 Oct 2026 20:52:07 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 35/38] mm: avoid use of VMA_SPECIAL_FLAGS in migrate_vma_setup() 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. 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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, Ihor Solodrai , Bert Karwatzki References: <20261009-b4-mmap-prepare-vma-flag-sanify-v5-0-923b70125b1e@kernel.org> <20261009-b4-mmap-prepare-vma-flag-sanify-v5-35-923b70125b1e@kernel.org> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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This > drops the VMA_IO_BIT test, which is safe as mm-managed mappings may not set > it. > > hugetlb mappings remain excluded, as they are fixed mappings. > > No functional change intended. > > Reviewed-by: Zi Yan > Acked-by: David Hildenbrand (Arm) > Signed-off-by: Lorenzo Stoakes (ARM) > --- > mm/migrate_device.c | 12 +++++++----- > 1 file changed, 7 insertions(+), 5 deletions(-) > > diff --git a/mm/migrate_device.c b/mm/migrate_device.c > index b9c453c28795..289d7b08ace4 100644 > --- a/mm/migrate_device.c > +++ b/mm/migrate_device.c > @@ -739,19 +739,21 @@ static void migrate_vma_unmap(struct migrate_vma *migrate) > */ > int migrate_vma_setup(struct migrate_vma *args) > { > + const struct vm_area_struct *vma = args->vma; > long nr_pages = (args->end - args->start) >> PAGE_SHIFT; > > args->start &= PAGE_MASK; > args->end &= PAGE_MASK; > - if (!args->vma || vma_test_any_mask(args->vma, VMA_SPECIAL_FLAGS) || > - vma_is_dax(args->vma)) > + if (!vma) > + return -EINVAL; > + if (!vma_is_mm_managed(vma) || vma_is_fixed_mapping(vma) || > + vma_is_dax(vma)) Same here, with the droppable thing changed this would be !vma_is_mm_backed() || vma_is_dax(vma) I guess. Acked-by: David Hildenbrand (Arm) -- Cheers, David