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 lists.ozlabs.org (lists.ozlabs.org [112.213.38.117]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 14F30C4453F for ; Wed, 22 Jul 2026 16:15:37 +0000 (UTC) Received: from boromir.ozlabs.org (localhost [127.0.0.1]) by lists.ozlabs.org (Postfix) with ESMTP id 4h4zr74ZBWz2ygG; Thu, 23 Jul 2026 02:15:35 +1000 (AEST) Authentication-Results: lists.ozlabs.org; arc=none smtp.remote-ip=172.234.252.31 ARC-Seal: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1784736935; cv=none; b=Mx0YJLR2/ctf2iCl4HgPV9phBCxpGYa2c4W5zfXVRlCPo2dJkBhr9fzM2WoADU16pMcZoJRWZl+fAnq/Tv/ALSBjhiohrklTUXzFLSUh/WUxAMHPUo+gVBfLMIF6Rnp00Y0F3Ki1pEwk4DpJmPLZTjGJc6Tw/b5uWbqBLaCbm6L4ZqKiUCXygixPgZ8nDlZJs+fD7Dpc04JETGfekFdM/HePFVzeYxSGdO5FogqekAoW4xqb43vB0pHASSntU8VNflTMcdwPJdOXi8V0+AJSIFKJWFtXShoIR5z03zuGq/DsVoBcrYMHYcQMu/cKD12CY6DdpyLxRZ970Ms8iEP5gA== ARC-Message-Signature: i=1; a=rsa-sha256; d=lists.ozlabs.org; s=201707; t=1784736935; c=relaxed/relaxed; bh=YtoXCA62CyJBNC7Tbkqm6QUVmIJyF8vWZgzG8HkNlzI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=EG2Gy+iaLvvzkj3L7t9fapEBNLD1MXh4GGpQnhaYBiZi11Mhhk/o9D/Y9C4C8fGINj17IsN02d50NaMV2QOI4UR5PrUVORR9Qu23RrBUhRuzlGfsqUKfSKocGdtD0sZ4w5OI5qh35BCQ0E5C1DvlJJ5vC57ZU0mPK5VYiplBX4GV3H7Fi0K1ndLn7xhKUG22ct1Lpu35iU6b7ptcPVAbhlCt63LYA0LIY7VXidnLAlbbshLrINvPohGcuwUsFTlSIYUo9WnmdaN9XzBYooHn9w64CZM8hqArx2j/DN1KfXYoxjQS15VWY7f0zNC6n6G3JumI1Tx8yuI7qN4IId7FCw== ARC-Authentication-Results: i=1; lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DZFALzRw; dkim-atps=neutral; spf=pass (client-ip=172.234.252.31; helo=sea.source.kernel.org; envelope-from=vbabka@kernel.org; receiver=lists.ozlabs.org) smtp.mailfrom=kernel.org Authentication-Results: lists.ozlabs.org; dmarc=pass (p=quarantine dis=none) header.from=kernel.org Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=kernel.org header.i=@kernel.org header.a=rsa-sha256 header.s=k20260515 header.b=DZFALzRw; dkim-atps=neutral Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=kernel.org (client-ip=172.234.252.31; helo=sea.source.kernel.org; envelope-from=vbabka@kernel.org; receiver=lists.ozlabs.org) Received: from sea.source.kernel.org (sea.source.kernel.org [172.234.252.31]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange x25519) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4h4zr65064z2yfy for ; Thu, 23 Jul 2026 02:15:34 +1000 (AEST) Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id F414E43964; Wed, 22 Jul 2026 16:15:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id A3F941F000E9; Wed, 22 Jul 2026 16:15:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1784736932; bh=YtoXCA62CyJBNC7Tbkqm6QUVmIJyF8vWZgzG8HkNlzI=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=DZFALzRwUkrcWF32RmBloDBG4APMVkGxhtgaZyfkfq4w77n6RpNrdAHXIykI0LwMX tGTerPv7RnSpnWTQAISeMEzjQWr0uGJk7k+k1pIaGnKeBR4YxJpt9RyDLS1Ii9bIGB 43/hCcIIVUkgRJS7+JSbLJBvsJXvM8ST2ld2ORuO4pGg5dZ4eXczqK6/TJ9lcC7zTV 184NzHUANyj1upIfiufIzTzgFXEU4ol0nH+6Z9pEAlACTIbjzOLfqyhBSUIaxXrwXh gLiKpiTLLNgHpkBvl6V4zRf6clxml/U/1TOwopiR7NwCRl7coCul519YgSFNAZ8pPL 5ogQPeJG8QmfA== Message-ID: Date: Wed, 22 Jul 2026 18:15:11 +0200 X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 13/13] mm/mremap: convert mremap code to use vma_flags_t Content-Language: en-US To: Lorenzo Stoakes , Andrew Morton , David Hildenbrand , "Liam R. Howlett" , Mike Rapoport , Suren Baghdasaryan , Michal Hocko , Thomas Bogendoerfer , Benjamin LaHaise , Alexander Viro , Christian Brauner , Jan Kara , Hugh Dickins , Baolin Wang , Jann Horn , Pedro Falcato , Muchun Song , Oscar Salvador , Zi Yan , Nico Pache , Ryan Roberts , Dev Jain , Barry Song , Lance Yang , Usama Arif , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , "Christophe Leroy (CS GROUP)" , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Lucas Stach , Russell King , Christian Gmeiner , Inki Dae , Seung-Woo Kim , Kyungmin Park , Krzysztof Kozlowski , Peter Griffin , Alim Akhtar , Jani Nikula , Joonas Lahtinen , Rodrigo Vivi , Tvrtko Ursulin , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , Lyude Paul , Danilo Krummrich , Tomi Valkeinen , Sandy Huang , =?UTF-8?Q?Heiko_St=C3=BCbner?= , Andy Yan , Thierry Reding , Mikko Perttunen , Jonathan Hunter , Gerd Hoffmann , Dmitry Osipenko , Gurchetan Singh , Chia-I Wu , Zack Rusin , Broadcom internal kernel review list , Matthew Brost , =?UTF-8?Q?Thomas_Hellstr=C3=B6m?= , Oleksandr Andrushchenko , Helge Deller , Kees Cook , Jaroslav Kysela , Takashi Iwai , Boris Brezillon , Steven Price , Liviu Dudau Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-samsung-soc@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-arm-msm@vger.kernel.org, freedreno@lists.freedesktop.org, nouveau@lists.freedesktop.org, linux-tegra@vger.kernel.org, virtualization@lists.linux.dev, intel-xe@lists.freedesktop.org, xen-devel@lists.xenproject.org, linux-fbdev@vger.kernel.org, linux-sound@vger.kernel.org References: <20260711-b4-vma-flags-mm-v2-0-0fa2357d5431@kernel.org> <20260711-b4-vma-flags-mm-v2-13-0fa2357d5431@kernel.org> From: "Vlastimil Babka (SUSE)" Autocrypt: addr=vbabka@kernel.org; keydata= xsFNBFZdmxYBEADsw/SiUSjB0dM+vSh95UkgcHjzEVBlby/Fg+g42O7LAEkCYXi/vvq31JTB KxRWDHX0R2tgpFDXHnzZcQywawu8eSq0LxzxFNYMvtB7sV1pxYwej2qx9B75qW2plBs+7+YB 87tMFA+u+L4Z5xAzIimfLD5EKC56kJ1CsXlM8S/LHcmdD9Ctkn3trYDNnat0eoAcfPIP2OZ+ 9oe9IF/R28zmh0ifLXyJQQz5ofdj4bPf8ecEW0rhcqHfTD8k4yK0xxt3xW+6Exqp9n9bydiy tcSAw/TahjW6yrA+6JhSBv1v2tIm+itQc073zjSX8OFL51qQVzRFr7H2UQG33lw2QrvHRXqD Ot7ViKam7v0Ho9wEWiQOOZlHItOOXFphWb2yq3nzrKe45oWoSgkxKb97MVsQ+q2SYjJRBBH4 8qKhphADYxkIP6yut/eaj9ImvRUZZRi0DTc8xfnvHGTjKbJzC2xpFcY0DQbZzuwsIZ8OPJCc LM4S7mT25NE5kUTG/TKQCk922vRdGVMoLA7dIQrgXnRXtyT61sg8PG4wcfOnuWf8577aXP1x 6mzw3/jh3F+oSBHb/GcLC7mvWreJifUL2gEdssGfXhGWBo6zLS3qhgtwjay0Jl+kza1lo+Cv BB2T79D4WGdDuVa4eOrQ02TxqGN7G0Biz5ZLRSFzQSQwLn8fbwARAQABzSNWbGFzdGltaWwg QmFia2EgPHZiYWJrYUBrZXJuZWwub3JnPsLBsAQTAQoAWhYhBKlA1DSZLC6OmRA9UCJPp+fM gqZkBQJqFFy6GxSAAAAAAAQADm1hbnUyLDIuNSsxLjEyLDIsMgIbAwUJGtCBUAULCQgHAwUV CgkICwUWAgMBAAIeBQIXgAAKCRAiT6fnzIKmZJIUEADFx/tREzUImHrEwVHeSvDFmA7tJysI UVrlvrM09E7GIuzphzv7jYmo8n3ANpCczLEVr4G0syYQdTigaZgv3+FQDIIzhKih1IHhu1Ei XHlywNWKnQxxQEUNi5Mwx43wQz5XVw9F1A7gtKBKNtfogO511hAbrzagrYajyQacEJ/+sfhZ 9Da8ltHIXD8pcYaHUfQgEusCgmEd9+KrUwrTbckFKmYq5chuE6yJ4J0EmWknL096jIE6CnzF FRslQ3B1UKDjxVsm1ZHfir5NeWszLkTvGFsddFaWTgh8UycESG6VQzKXjjewXu2pG7YQYRpj QKm1W5X2TkwWkXRBZTmfmbhxIUMh3+zf5wQ463rSmDN/8v81tdqBtAW6rH/kzg1GvkaTHXn0 507yEHFzBksk2viAuIxxr7km8+/KARYLIdGtx30EG8cKzAUZOK6WqxtNCsXUJNrVE8CWrCaD icoNu7Fs1c5hmPHdSTnU48ce67449DdnO4neLSNhRiGlMHJgfJUmgrxu/hcYeOZ3haWmEQ2w uW1Mh01OHi8QZHCEyAbABrPs9GUgccc/4eYXX9hIgxfSkYzn8f+8NuIFPWl/0uTvjgqU29FQ SbzOLxHq9439Ox40G5mS5eZXRGxITYR+6TXvRGI6P/264jvflnr/pDGUttaikU+0W+1uxgKH cmYbEc7ATQRbGTU1AQgAn0H6UrFiWcovkh6EXVcl+SeqyO6JHOPm+e9Wu0Vw+VIUvXZVUVVQ La1PQDUi6j00ChlcR66g9/V0sPIcSutacPKfdKYOBvzd4rlhL8rfrdEsQw5ApZxrA8kYZVMh FmBRKAa6wos25moTlMKpCWzTH84+WO5+ziCTsTUZASAToz3RdunTD+vQcHj0GqNTPAHK63sf bAB2I0BslZkXkY1RLb/YhuA6E7JyEd2pilZOrIuBGl/5q2qSakgnAVFWFBR/DO27JuAksYnq +aH8vI0xGvwn75KqSk4UzAkDzWSmO4ZHuahKtQgZNsMYV+PGayRBX9b9zbldzopoLBdqHc4n jQARAQABwsF8BBgBCgAmAhsMFiEEqUDUNJksLo6ZED1QIk+n58yCpmQFAmfIHFQFCRYU6J8A CgkQIk+n58yCpmS2PA//bqN1LfcotmArgElsa+0EGZSQlYgK48pm8WAeTXTngudP9IJ4SuKY HR5RNjHcBeqN+Me0zxRqYzRb8nGanHEkDyf4Im8DQM8d6vbyU+FcPmG4skud4kgS1zMHnlVd SXfSIwKC/hKgdHG8aBV7545Lz9X6Iohea+94wneD0aw/hqF+QWewGZhWJriWAZtvEkzNjQOi 4U9F/trLten/x7bpphDSnDMKJtITbtzATT1Dq7o7VpIUK1nCTQALMuMjKCdi8OdU/+V+R3O4 0PXWvX8qrvqYapVbZ+9KqT74FsuB0Ya9uXwgBF2Q6cRuETZk5vqaqKxzqoQZCO8AOz/58j6O 2RHNy/mZEN+7tJ5Tsq42zVJ4jxsT8b9YplavCMsnBgDeRWhcbYhCyttoL7nYISyWg4kQYZ/P wIV3OuNv2f8iKYsxNsRuClOAF82+gvqOy1/1pprFjy8uo2pkoOrb63aOP3vO5VHnRKgra6dq NcaZ+c6J4H+nEJGi2SkHAUJz5oBzuThvPudLvPA/SK8sKoM01IRxSihev/S/5WLazXB1PGem OCbvzC1IjWJJraxiDJ5IygokapUa2RP7+WBR22skQ3SSl6G107QgWKSyTOGWEaRmV53vxQLV jXuCmzSSasTL60zq5yGrT4/DYQVSNEUiUbG4pYekxJujNeEDkUlky0Y= In-Reply-To: <20260711-b4-vma-flags-mm-v2-13-0fa2357d5431@kernel.org> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/11/26 20:45, Lorenzo Stoakes wrote: > Replace use of the legacy vm_flags_t flags with vma_flags_t values > throughout the mremap logic. > > Note that, in replacing vm_flags_clear() (which takes the VMA write lock) > with vma_clear_flags() and vma_clear_flags_mask() (which do not) > respectively in unmap_source_vma() and dontunmap_complete(), we do not add > a VMA write lock to account for htis. > > This is because, in both cases, move_vma() is their calling function and > this has already acquired the VMA write lock on vrm->vma whose VMA flags > are being cleared. > > In the case of vma_set_flags() in unmap_source_vma() we do need to do this > - as prev and next were not necessarily write locked at this point. > > Additionally update comments to reflect the changes to be consistent. > > No functional change intended. > > Reviewed-by: Zi Yan > Signed-off-by: Lorenzo Stoakes Reviewed-by: Vlastimil Babka (SUSE)