From patchwork Fri Feb 25 08:50:25 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: John Hubbard X-Patchwork-Id: 12759914 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]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08090C433FE for ; Fri, 25 Feb 2022 08:50:55 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id D01F08D000A; Fri, 25 Feb 2022 03:50:51 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id C63F28D0006; Fri, 25 Feb 2022 03:50:51 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id AB45E8D000A; Fri, 25 Feb 2022 03:50:51 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (relay.hostedemail.com [64.99.140.25]) by kanga.kvack.org (Postfix) with ESMTP id 94D5E8D0006 for ; Fri, 25 Feb 2022 03:50:51 -0500 (EST) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay07.hostedemail.com (Postfix) with ESMTP id 6E0E2219C7 for ; Fri, 25 Feb 2022 08:50:51 +0000 (UTC) X-FDA: 79180681902.02.FCCB3DA Received: from NAM10-MW2-obe.outbound.protection.outlook.com (mail-mw2nam10on2080.outbound.protection.outlook.com [40.107.94.80]) by imf14.hostedemail.com (Postfix) with ESMTP id 98A1410000F for ; Fri, 25 Feb 2022 08:50:50 +0000 (UTC) ARC-Seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=EzODPZatyn9W0Fjj7PNYZPtgjou+HfkkWOMOk915RdLejpI39ZqHGopKxsWvfWFf7q6veCcuj8Apyg+4UQonViQSe/m4G7A+jImdlNIW/9moN4gGGT7EIe+yvI1Py37VD9nG6tt9wgi+ri3S0GBykg+Hrk0y4U/pn59YW+++Te/KKHAd3QQ6KuByYfbiu9lU0/oFWeQNlyVpm7zWxkFh+HPLUyHw/3oDOEX+SR5RBJ2yGBpCOzPeT/D2rEe7ws2NicDbrzXzKYOg+x6J8ub90dFMrYqtdCDWgKFsSsdllC6Djp4D9v3Rkwq8ob3BW7Hm0V6dfmrBy2aj1j00vbYkbA== 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=mVjachwLZOJaasM1HxAYAlh+fxfrxwqQnXama3fFC5A=; b=ZvvE3gAjRZD6lkDf6bp/VvilesY74JFtFJVK8lP4sJf5cHb1ISF/3bgejS8VwMNP2QeQa39wUl/ZK9maOvC+e3Psgpxk7T6I/6T5Bd5Fw6PxyypwH56xxoN1KKIB4j/e1L/2VDSlSgSYnPJXWAbr0r2NiaYjVT5aklWwUt+1C4wpylkPofOLcFwCHgpNmW+D6Z4j60vrWC17zvplbX62/lLIzkmRgEVuPgHYUNO2bg3Yf2orHzWKEhyvTszx5ouJv8uTSrKctIzgyryhH4RYorsrFMRz212az+eaG1zEsC5gpY8bZ7jlIhcOhnVhhk6w1+u03jlRJHwvlQrqZ4E3yQ== ARC-Authentication-Results: i=1; mx.microsoft.com 1; spf=pass (sender ip is 12.22.5.235) smtp.rcpttodomain=vger.kernel.org smtp.mailfrom=nvidia.com; dmarc=pass (p=reject sp=reject 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=mVjachwLZOJaasM1HxAYAlh+fxfrxwqQnXama3fFC5A=; b=Zve+2qknEQaTEYfdwjqqoB7LB8CZjjmFxrhuc3oz3egNKcdqFqHa7Wixckcz4FMkeKnTuihuK9Ow/bhYkFCWtp1csu+piBVAdlXPzIloOZmXuf5TptO/xUtIyJPj2yN9k/7j9DTrcyAM1ZoNgH0RQc4DErdFhbUN5lP/KknK1lPgVZZa2EZWDf6X0FAn9Qyl7ztQ2V3NvnpVWbaqN0JW92GKUXndT7PaMDhMDLk0Dq9+1rMjgf2qSQ+ODj5lBRpLnplNVEQFinAYoYfGCQXtDyWYzYh2QI0r2nIs+iKuAWNUHRz8zpbQM9IgDtD7XkTon4zN5ym55dQe6+6AjYqktg== Received: from BN9PR03CA0806.namprd03.prod.outlook.com (2603:10b6:408:13f::31) by BN6PR1201MB0180.namprd12.prod.outlook.com (2603:10b6:405:56::12) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5017.22; Fri, 25 Feb 2022 08:50:48 +0000 Received: from BN8NAM11FT054.eop-nam11.prod.protection.outlook.com (2603:10b6:408:13f:cafe::43) by BN9PR03CA0806.outlook.office365.com (2603:10b6:408:13f::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.5017.24 via Frontend Transport; Fri, 25 Feb 2022 08:50:48 +0000 X-MS-Exchange-Authentication-Results: spf=pass (sender IP is 12.22.5.235) smtp.mailfrom=nvidia.com; dkim=none (message not signed) header.d=none;dmarc=pass action=none header.from=nvidia.com; Received-SPF: Pass (protection.outlook.com: domain of nvidia.com designates 12.22.5.235 as permitted sender) receiver=protection.outlook.com; client-ip=12.22.5.235; helo=mail.nvidia.com; Received: from mail.nvidia.com (12.22.5.235) by BN8NAM11FT054.mail.protection.outlook.com (10.13.177.102) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_CBC_SHA384) id 15.20.5017.22 via Frontend Transport; Fri, 25 Feb 2022 08:50:47 +0000 Received: from rnnvmail201.nvidia.com (10.129.68.8) by DRHQMAIL107.nvidia.com (10.27.9.16) with Microsoft SMTP Server (TLS) id 15.0.1497.18; Fri, 25 Feb 2022 08:50:46 +0000 Received: from rnnvmail202.nvidia.com (10.129.68.7) by rnnvmail201.nvidia.com (10.129.68.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.986.9; Fri, 25 Feb 2022 00:50:45 -0800 Received: from sandstorm.attlocal.net (10.127.8.10) by mail.nvidia.com (10.129.68.7) with Microsoft SMTP Server id 15.2.986.9 via Frontend Transport; Fri, 25 Feb 2022 00:50:44 -0800 From: John Hubbard To: Jens Axboe , Jan Kara , Christoph Hellwig , Dave Chinner , "Darrick J . Wong" , Theodore Ts'o , Alexander Viro , Miklos Szeredi , Andrew Morton , Chaitanya Kulkarni CC: , , , , LKML , John Hubbard Subject: [RFC PATCH 7/7] block, direct-io: flip the switch: use pin_user_pages_fast() Date: Fri, 25 Feb 2022 00:50:25 -0800 Message-ID: <20220225085025.3052894-8-jhubbard@nvidia.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220225085025.3052894-1-jhubbard@nvidia.com> References: <20220225085025.3052894-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 6480806c-cca4-4a7c-20ec-08d9f83beb12 X-MS-TrafficTypeDiagnostic: BN6PR1201MB0180:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: Lv1rCmizZyWkMNp8GC3k5HyeJ/MMauJ+khLsMeeEYr3My1wa3QL0fdCQFQ23HHqE7WbShOdxgO3/+QGrSOZ+YdeRCRKuDx18PQpVt6QwRqvlYR8TIA82pe0sqJXXgoW49SMM190IM8YZlMTa0ue/j4PXBr7v5D6StzTIjIPHxf9u+PibqrvSkOOZm+QwKwdd/DKQs9mYPLoR4ao5fgz2treiO9ZYnCSEz7f4GokGtu17y0OGMtLAjba2JEncRfcxtwcr2txPuiCSK/XlDUs7C7e+Fa3BmiWwbZ2ZMwtdYFxFAUcRCCxUJglPlbbz+pj4YFnwibpAR1lktacjqpr/X+LPzHxqWteir+V4HAbHYufxqPMvBxyw9lBTvlqxOKQlMZI6e9NiWUkvEFhK1ibu0fwVEnEBPdoFxiWjRRZ0SF+clBeWOSgLhiXI5bbBM29IJTCuzm8BwDov1MO4oxicQa1Nd64HxuNMjGOtzwjZcuRxzzGyvZJGdqvY+oazJoVeizRu8HPSxXd/xqgjyKJgK2a3EvDw9c3YzTOPmAh5+9oXTGQSHpUS4194VBy24VALZO/CeGHuVD4S5uilFwZLjwH+xmuD0fZjIXXx7vSKgAxwA51n4KkinxTtqpxKbwelRdtbgOe+XvUkrm9AibGNBsvW/OFUGCg33qb9VIcyw8+iizU15/sdzHLefCKDp0RB/sSxiU4XngatORUXOErV89OB1FVyj7MhCmMiiPUs2RM= X-Forefront-Antispam-Report: CIP:12.22.5.235;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:mail.nvidia.com;PTR:InfoNoRecords;CAT:NONE;SFS:(13230001)(4636009)(40470700004)(46966006)(36840700001)(83380400001)(82310400004)(336012)(6666004)(40460700003)(110136005)(6636002)(316002)(54906003)(36860700001)(2616005)(1076003)(426003)(47076005)(186003)(81166007)(7416002)(2906002)(36756003)(508600001)(70586007)(356005)(921005)(70206006)(8676002)(86362001)(4326008)(107886003)(26005)(8936002)(5660300002)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: Nvidia.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 25 Feb 2022 08:50:47.8353 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 6480806c-cca4-4a7c-20ec-08d9f83beb12 X-MS-Exchange-CrossTenant-Id: 43083d15-7273-40c1-b7db-39efd9ccc17a X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=43083d15-7273-40c1-b7db-39efd9ccc17a;Ip=[12.22.5.235];Helo=[mail.nvidia.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT054.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BN6PR1201MB0180 X-Rspam-User: Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=Nvidia.com header.s=selector2 header.b=Zve+2qkn; spf=none (imf14.hostedemail.com: domain of jhubbard@nvidia.com has no SPF policy when checking 40.107.94.80) smtp.mailfrom=jhubbard@nvidia.com; dmarc=pass (policy=reject) header.from=nvidia.com X-Rspamd-Server: rspam08 X-Rspamd-Queue-Id: 98A1410000F X-Stat-Signature: nja4g4zf1u6a96tw9es136qtywfe8i9u X-HE-Tag: 1645779050-373543 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: Remove CONFIG_BLK_USE_PIN_USER_PAGES_FOR_DIO, but leave the dio_w_*() wrapper functions in place, with the pin_user_pages_fast() defines as the only choice. A subsequent patch is now possible, to rename all dio_w_*() functions so as to remove the dio_w_ prefix. Signed-off-by: John Hubbard --- block/Kconfig | 25 ------------------------- include/linux/bvec.h | 7 ------- 2 files changed, 32 deletions(-) diff --git a/block/Kconfig b/block/Kconfig index f6ca5e9597e4..168b873eb666 100644 --- a/block/Kconfig +++ b/block/Kconfig @@ -50,31 +50,6 @@ config BLK_DEV_BSG_COMMON config BLK_ICQ bool -config BLK_USE_PIN_USER_PAGES_FOR_DIO - bool "DEVELOPERS ONLY: Enable pin_user_pages() for Direct IO" if EXPERT - default n - help - For Direct IO code, retain the pages via calls to - pin_user_pages_fast(), instead of via get_user_pages_fast(). - Likewise, use pin_user_page() instead of get_page(). And then - release such pages via unpin_user_page(), instead of - put_page(). - - This is a temporary setting, which will be deleted once the - conversion is completed, reviewed, and tested. In the meantime, - developers can enable this in order to try out each filesystem. - For that, it's best to monitor these /proc/vmstat items: - - nr_foll_pin_acquired - nr_foll_pin_released - - ...to ensure that they remain equal, when "at rest". - - Say yes here ONLY if are actively developing or testing the - block layer or filesystems with pin_user_pages_fast(). - Otherwise, this is just a way to throw off the refcounting of - pages in the system. - config BLK_DEV_BSGLIB bool "Block layer SG support v4 helper lib" select BLK_DEV_BSG_COMMON diff --git a/include/linux/bvec.h b/include/linux/bvec.h index a96a68c687f6..5bc98b334efe 100644 --- a/include/linux/bvec.h +++ b/include/linux/bvec.h @@ -241,15 +241,8 @@ static inline void *bvec_virt(struct bio_vec *bvec) return page_address(bvec->bv_page) + bvec->bv_offset; } -#ifdef CONFIG_BLK_USE_PIN_USER_PAGES_FOR_DIO #define dio_w_pin_user_pages_fast(s, n, p, f) pin_user_pages_fast(s, n, p, f) #define dio_w_pin_user_page(p) pin_user_page(p) #define dio_w_unpin_user_page(p) unpin_user_page(p) -#else -#define dio_w_pin_user_pages_fast(s, n, p, f) get_user_pages_fast(s, n, p, f) -#define dio_w_pin_user_page(p) get_page(p) -#define dio_w_unpin_user_page(p) put_page(p) -#endif - #endif /* __LINUX_BVEC_H */