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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id F2E93C433F5 for ; Thu, 14 Oct 2021 20:57:36 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 8454560F9E for ; Thu, 14 Oct 2021 20:57:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 8454560F9E Authentication-Results: mail.kernel.org; dmarc=fail (p=quarantine dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=kvack.org Received: by kanga.kvack.org (Postfix) id C4794900003; Thu, 14 Oct 2021 16:57:35 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id BCF56900002; Thu, 14 Oct 2021 16:57:35 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id A4883900003; Thu, 14 Oct 2021 16:57:35 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0096.hostedemail.com [216.40.44.96]) by kanga.kvack.org (Postfix) with ESMTP id 8F028900002 for ; Thu, 14 Oct 2021 16:57:35 -0400 (EDT) Received: from smtpin15.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay03.hostedemail.com (Postfix) with ESMTP id 52D528249980 for ; Thu, 14 Oct 2021 20:57:35 +0000 (UTC) X-FDA: 78696254070.15.C609B6A Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2057.outbound.protection.outlook.com [40.107.94.57]) by imf01.hostedemail.com (Postfix) with ESMTP id F3B2E508138C for ; Thu, 14 Oct 2021 20:57:32 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=T+Og7C0rC3DEF8QlsgaEZsMGm6uZZX9QaR2GSSQUJAGM4pSDhE+Uq4VzhE92ie0ZNAHPjGQi8nbcDLsMNphIsPYKlxEOZERR7r4UpQWU0UhNJsIiat9xyO8OZf+gUJBF4Oy/wOaIxToitUEqVCl/Nz2T03bCMs/tjphf/O/iUWUjcpsPLlwLVZu90eyckwpLcE1WG012ezOuxTqBHB1Z/pA7TuX4knvM/o9HD744be6YOdo2K8CARZF9rE0qePQ6OjTy5U+58tAoYCL0XF3YZdumTt64BUHua/GvfFOjEyl/EgOS6C76zvKkYmwO1Pflsl5J7hFwqSyAVJMP011a6A== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=hvpTn4a8zxu+601pUl+qvYpYhZTCqZpliAcG4fPUr5s=; b=Ho+d4v4bH/R9m2EzhJLUDY7fyUqS2JTqW+sVRaL4Ge9FqgC1LQM8yNCljXN2eNerZoPhOR2gMNNYeJxvoDeqjjnAM3KDkehQzxyzSML0JIPgUH9AAVnMHEnY2+WLpyB7dWIcxoe4V6Qh6h0svySsCHL89NqC8cf0JcdaL9iMEfoZEOuNThmQkW7Dq3vxNkmsxwhsSSEdAdGBsdWbH4s4vrEI3c8o415mw25XFkFAYPzbtXby6/G5+Fy9voXMkcEiuG4QFsA5sU9bSI4DI++xXm5lW8zDm08+pv82rRGuxxPpcUzbj6EOzmKk/JmDp8La/tPWr+agEXyAo4m0QMMwNA== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 216.228.112.36) smtp.rcpttodomain=infradead.org smtp.mailfrom=nvidia.com; dmarc=pass (p=quarantine sp=quarantine pct=100) action=none header.from=nvidia.com; dkim=none (message not signed); arc=none DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=Nvidia.com; s=selector2; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-SenderADCheck; bh=hvpTn4a8zxu+601pUl+qvYpYhZTCqZpliAcG4fPUr5s=; b=siQxPlzZrFafDLoU/wWpNpFmUfEU1SGEUiT/51tFpyooJQu/uNsIHESaevyKl31TSocdUOUOD5FzLoPjrdNM+Y11tvxKL1MvXmfaNgLPUVXXh5U6RY9qECzv2ds5l72RGMbCgmnQDU6ZxGAR16CNEvgDMerRR04WSGqdJGJpxQNe55M2RR518lndp843Ts2W5tW8uSWTdYC64qTTeF48WGNoBiPlifvWfDSkfohb2LA/nfLkHj0NmXFOwDqh04OY9DduntztJ5vs6QroP7Loswl749H0rQP63RO324gBdPVAKPnzBulPhBG2NZ8PguIxmLjTEtFKv6ezwoEHuZ0V7Q== Received: from BN0PR04CA0075.namprd04.prod.outlook.com (2603:10b6:408:ea::20) by MWHPR12MB1151.namprd12.prod.outlook.com (2603:10b6:300:e::15) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4587.20; Thu, 14 Oct 2021 20:57:31 +0000 Received: from BN8NAM11FT016.eop-nam11.prod.protection.outlook.com (2603:10b6:408:ea:cafe::e1) by BN0PR04CA0075.outlook.office365.com (2603:10b6:408:ea::20) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4608.14 via Frontend Transport; Thu, 14 Oct 2021 20:57:29 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 216.228.112.36) smtp.mailfrom=nvidia.com; infradead.org; dkim=none (message not signed) header.d=none;infradead.org; dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 216.228.112.36 as permitted sender) receiver=protection.outlook.com; client-ip=216.228.112.36; helo=mail.nvidia.com; Received: from mail.nvidia.com (216.228.112.36) by BN8NAM11FT016.mail.protection.outlook.com (10.13.176.97) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.4608.15 via Frontend Transport; Thu, 14 Oct 2021 20:57:28 +0000 Received: from HQMAIL105.nvidia.com (172.20.187.12) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 14 Oct 2021 20:57:28 +0000 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Thu, 14 Oct 2021 20:57:27 +0000 Received: from rcampbell-test.nvidia.com (172.20.187.5) by mail.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1497.18 via Frontend Transport; Thu, 14 Oct 2021 20:57:27 +0000 Subject: Re: [PATCH v1 2/2] mm: remove extra ZONE_DEVICE struct page refcount To: Jason Gunthorpe CC: Alex Sierra , , , , , , , , , , , References: <20211014153928.16805-1-alex.sierra@amd.com> <20211014153928.16805-3-alex.sierra@amd.com> <20211014170634.GV2744544@nvidia.com> <20211014180132.GA3567687@nvidia.com> From: Ralph Campbell Message-ID: Date: Thu, 14 Oct 2021 13:57:27 -0700 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0 MIME-Version: 1.0 In-Reply-To: <20211014180132.GA3567687@nvidia.com> Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: fb1a4024-13e8-4cc7-e460-08d98f553c05 X-MS-TrafficTypeDiagnostic: MWHPR12MB1151: X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2000; X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:216.228.112.36;CTRY:US;LANG:en;SCL:1;SRV:;IPV:NLI;SFV:NSPM;H:mail.nvidia.com;PTR:schybrid05.nvidia.com;CAT:NONE;SFS:(4636009)(46966006)(36840700001)(36756003)(8936002)(31686004)(8676002)(7416002)(7636003)(53546011)(426003)(26005)(2616005)(508600001)(356005)(4744005)(336012)(6636002)(4326008)(37006003)(70586007)(2906002)(5660300002)(36860700001)(31696002)(54906003)(7696005)(316002)(47076005)(70206006)(82310400003)(6862004)(86362001)(186003)(43740500002);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 14 Oct 2021 20:57:28.9928 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: fb1a4024-13e8-4cc7-e460-08d98f553c05 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[216.228.112.36];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT016.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: MWHPR12MB1151 X-Rspamd-Queue-Id: F3B2E508138C X-Stat-Signature: i6kwsqx9dzkwa4p7a4cq3kaeyf9hgpaz Authentication-Results: imf01.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=siQxPlzZ; dmarc=pass (policy=quarantine) header.from=nvidia.com; spf=none (imf01.hostedemail.com: domain of rcampbell@nvidia.com has no SPF policy when checking 40.107.94.57) smtp.mailfrom=rcampbell@nvidia.com X-Rspamd-Server: rspam02 X-HE-Tag: 1634245052-892807 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000042, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On 10/14/21 11:01 AM, Jason Gunthorpe wrote: > On Thu, Oct 14, 2021 at 10:35:27AM -0700, Ralph Campbell wrote: > >> I ran xfstests-dev using the kernel boot option to "fake" a pmem device >> when I first posted this patch. The tests ran OK (or at least the same >> tests passed with and without my patch). > Hmm. I know nothing of xfstests but > > tests/generic/413 > > Looks kind of like it might cover this situation? > > Did it run for you? > > Jason I don't remember. I'll have to rerun the test which might take a day or two to set up again.