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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 50D4BC43458 for ; Thu, 2 Jul 2026 07:35:42 +0000 (UTC) Received: from kara.freedesktop.org (unknown [131.252.210.166]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2810F10F1B6; Thu, 2 Jul 2026 07:35:42 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=linux.dev header.i=@linux.dev header.b="UUw36nfQ"; dkim-atps=neutral Received: from kara.freedesktop.org (localhost [127.0.0.1]) by kara.freedesktop.org (Postfix) with ESMTP id 2C71D46E39; Thu, 2 Jul 2026 07:20:56 +0000 (UTC) ARC-Seal: i=1; cv=none; a=rsa-sha256; d=lists.freedesktop.org; s=20240201; t=1782976855; b=0+tiSUOfyluVfdGYH012K4HTUfZeSeBJUeGUbNoQfPt2uiqrGSxT8a+O+JeZVrcdzMQtf dHSwK+yNmAzLLBHB7M/glNiiR3TVfWBmVDW26Y4jK1SEXENGkiVa8xW3ll5Fb/s7YU4kDUA UJkCLZfJkww7X/MGsZ09wGqV5G5JLAosR/wDpDVvJ0zsG8tNK8dYrTmEVvLthm1ct80eyok Bn/rQ7cFZNzVUZ04VHpkMH7JyNKj3Jo/s44nd7JuS7F9dQ8G5n8LueSePrXI5lggNfoHRV5 rc0QAcbJf2C2gTc+nNW2n1hYwHApbRCzQh2Y5lfQ8Z+QHLSInP48rT104skA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=lists.freedesktop.org; s=20240201; t=1782976855; h=from : sender : reply-to : subject : date : message-id : to : cc : mime-version : content-type : content-transfer-encoding : content-id : content-description : resent-date : resent-from : resent-sender : resent-to : resent-cc : resent-message-id : in-reply-to : references : list-id : list-help : list-unsubscribe : list-subscribe : list-post : list-owner : list-archive; bh=cdXAMvaGTLXZ4tRHqX+15mFjqPO5NJv7/lbzInUeZeM=; b=maV9ZNDrULArvCp3ZXQ7l2V5z3RI6YWdxSpm5uXwiix72buOtq/G2BJ0/HvP0m28h+hT8 OVNfwh9Jxra+2pAFVGN0dRpfHOJDCDehMdoyo4J7v84A6pVLBWglnOdI9GslwMlWyOh9Z/a URYdQPui5eC8dFTIao8lsnbhWr1xucIYjkWiMb3dpW363EVPiv/RiM6yiB7ExKNjGAT2qCC cYRZ84LCGbUj7QKRqvmHI1ra4V+uEg1I7KA2mMbxeeMT5oQDZ56sZf2v2+hI+tELB612OxG J1vrzNLFqkSA1Fg0FHLYcQj7iNoqre6Ea2EV6ZDWxZLWGQ5rb7KZNnP/OTsQ== ARC-Authentication-Results: i=1; mail.freedesktop.org; dkim=pass header.d=linux.dev; arc=none (Message is not ARC signed); dmarc=pass (Used From Domain Record) header.from=linux.dev policy.dmarc=none Authentication-Results: mail.freedesktop.org; dkim=pass header.d=linux.dev; arc=none (Message is not ARC signed); dmarc=pass (Used From Domain Record) header.from=linux.dev policy.dmarc=none Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by kara.freedesktop.org (Postfix) with ESMTPS id B069A46E0A for ; Thu, 2 Jul 2026 07:20:50 +0000 (UTC) X-Greylist: delayed 431 seconds by postgrey-1.36 at gabe; Thu, 02 Jul 2026 07:35:36 UTC Received: from out-178.mta1.migadu.com (out-178.mta1.migadu.com [95.215.58.178]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4B63210F1B0; Thu, 2 Jul 2026 07:35:36 +0000 (UTC) X-Report-Abuse: Please report any abuse attempt to abuse@migadu.com and include these headers. DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.dev; s=key1; t=1782977290; h=from:from: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; bh=cdXAMvaGTLXZ4tRHqX+15mFjqPO5NJv7/lbzInUeZeM=; b=UUw36nfQUDO4ek5W5MoGxv/bQdNbTQycY1qQKAEoJymjql+ZXc8a2FUo9eNrafl6xDrEni 1302Z8Y+Ma+0qxdUDhBISoxry5nus7uGAN8fTkB0ZcU/zUf+14Ol9iIljWhjg5Yh/mt933 8BhSh84bNWygA1To4TaXOltx56F5hgs= From: Lance Yang To: ljs@kernel.org Subject: Re: [PATCH 01/13] mm: introduce vma_flags_can_grow() and vma_can_grow() Date: Thu, 2 Jul 2026 15:27:50 +0800 Message-Id: <20260702072750.45641-1-lance.yang@linux.dev> In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT Message-ID-Hash: 5SHGNMML3XO43QZPJVZPKEFLSKLBD5SN X-Message-ID-Hash: 5SHGNMML3XO43QZPJVZPKEFLSKLBD5SN X-MailFrom: lance.yang@linux.dev X-Mailman-Rule-Misses: dmarc-mitigation; no-senders; approved; emergency; loop; banned-address; member-moderation; nonmember-moderation; administrivia; implicit-dest; max-recipients; max-size; news-moderation; no-subject; digests; suspicious-header CC: akpm@linux-foundation.org, tsbogend@alpha.franken.de, maddy@linux.ibm.com, mpe@ellerman.id.au, maarten.lankhorst@linux.intel.com, mripard@kernel.org, simona@ffwll.ch, l.stach@pengutronix.de, inki.dae@samsung.com, sw0312.kim@samsung.com, kyungmin.park@samsung.com, krzk@kernel.org, peter.griffin@linaro.org, jani.nikula@linux.intel.com, joonas.lahtinen@linux.intel.com, rodrigo.vivi@intel.com, tursulin@ursulin.net, robin.clark@oss.qualcomm.com, lumag@kernel.org, dakr@kernel.org, tomi.valkeinen@ideasonboard.com, hjc@rock-chips.com, heiko@sntech.de, andy.yan@rock-chips.com, thierry.reding@kernel.org, mperttunen@nvidia.com, kraxel@redhat.com, dmitry.osipenko@collabora.com, zack.rusin@broadcom.com, matthew.brost@intel.com, thomas.hellstrom@linux.intel.com, oleksandr_andrushchenko@epam.com, deller@gmx.de, bcrl@kvack.org, viro@zeniv.linux.org.uk, brauner@kernel.org, muchun.song@linux.dev, osalvador@suse.de, david@kernel.org, ziy@nvidia.com, baolin.wang@linux.alibaba.com, liam@infradead.org, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, lance.yang@linux.dev, hughd@google.com, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, jannh@google.com, pfalcato@suse.de, kees@kernel.org, perex@perex.cz, tiwai@suse.com, linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org, etnaviv@lists.freedesktop.org, linux-arm-kernel@lists.infradead.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-rockchip@lists.infradead.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-aio@kvack.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-sound@vger.kernel.org X-Mailman-Version: 3.3.8 Precedence: list List-Id: Nouveau development list Archived-At: Archived-At: List-Archive: List-Archive: List-Help: List-Owner: List-Post: List-Subscribe: List-Unsubscribe: On Mon, Jun 29, 2026 at 08:25:24PM +0100, Lorenzo Stoakes wrote: >These test whether the VMA has stack sematics, i.e. is able to grow upwards >or downwards depending on the architecture. > >In order to account for arches which do not support upward-growing stacks, >introduce VMA_GROWSUP whose definition depends on the architecture >supporting it, and use vma_flags_test_single_mask() in vma_flags_can_grow() >to account for this. > >Update the VMA userland tests to reflect the changes > >No functional change intended. > >Signed-off-by: Lorenzo Stoakes >--- Nice cleanup! Feel free to add: Reviewed-by: Lance Yang