From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from out-187.mta1.migadu.com (out-187.mta1.migadu.com [95.215.58.187]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 79FD33909BF; Thu, 2 Jul 2026 07:28:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=95.215.58.187 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782977297; cv=none; b=ISPbTQvjKDjg6ulZapZVOj0xNfCb0gp1t0urFAOHrEonij8lCS38Gz+Hp4W55h9Yw9Zh5diJKjEkVGu+NKoj620co/wdFU8VYUHHzOp5PQOQBTYjGgqaiermLighcXOw3t39VaKNtsgPQVsGCVZPqZQYPBbH1cUmaOs/YB/CPBs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782977297; c=relaxed/simple; bh=cdXAMvaGTLXZ4tRHqX+15mFjqPO5NJv7/lbzInUeZeM=; h=From:To:Cc:Subject:Date:Message-Id:In-Reply-To:References: MIME-Version:Content-Type; b=S0Ixgx6bojeVx8KXvdWw5velIlcmsXI2VBKXuWGTh6AXLMuiS9SghHYaIfmHGZf9xWsz1yF6QnEDiZF3qqf6bHLXb86HxtXFtnEKtgmFrjnCOHCdy3kHzUhrlcxFtWjWpH6S+n+c+2GZNQCgKFJP1R2qNxdwpur0Z+UTDZFNdII= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev; spf=pass smtp.mailfrom=linux.dev; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b=UUw36nfQ; arc=none smtp.client-ip=95.215.58.187 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.dev Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.dev Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.dev header.i=@linux.dev header.b="UUw36nfQ" 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 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, tzimmermann@suse.de, airlied@gmail.com, 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, lyude@redhat.com, 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, jonathanh@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 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: Precedence: bulk X-Mailing-List: linux-arm-msm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Migadu-Flow: FLOW_OUT 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