Received: by 2002:a25:5b86:0:0:0:0:0 with SMTP id p128csp666813ybb; Thu, 28 Mar 2019 09:46:42 -0700 (PDT) X-Google-Smtp-Source: APXvYqzEJczJ26jY0jcYlF0ul2oP9hREDdaU4O6p8SnzBd813J8ffmL7PECq4tmbOXW1KB97E89J X-Received: by 2002:a63:1ce:: with SMTP id 197mr40905009pgb.47.1553791601951; Thu, 28 Mar 2019 09:46:41 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553791601; cv=none; d=google.com; s=arc-20160816; b=UXHylZSfmV2MHDizIs/Vu+wOOEUulXh+KA1U143oMlgVf80pmyIEvNlwOf1gvb6sla CzfQIZJh4mJbnYrfU9vR33TjGQHsGBefKu4EEDlMVFk5MB6goHc2aW9SmuKtYfeBr+gw 6svq7v3CGwcq032xM68wa0QTDXCRotQnA9T+t+j9Kd9QvVeYVOTVxkQ4EfwEyEu+qR/G ZpyYJ1zfeoaEoHLjPoVEtxCxiXFe8kEeZDLTu+oBbfWDhNNjNuTTomx6u00wMkmvHdqy UBfzfchY3Lt3xFpRpNmSWcFX/PtwoG4XP42UWrPTsoAfgr0FlRkWrTG67Mw4o7kG6lxa 2Keg== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:sender:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=I94rqhDRqoRaPN0ZLeXgilZosbFseXlIxesNkZOMp5Q=; b=XbbenabFzx+LPpI/zrZKMNM9CNqHb4QfM5IHR3yEexHr1OgbKmsr3813dQ3CFN9CbG k/sulsPkJI2TAGbu87+85MY7TPIGnXrm23AiHbE5nxMQxZ+CuHK1KRrN0JwCxXZolvUt d1BJpXUES9DrOLuG3Ebbw1aetC0Jm0m9DF+tIx+0mUlfKlNJOs6gmnerZhH6Bvks6W/g Hw9Me8XnTWMJ8Hhj5dvQZB/QFolj9VV42BIkBCXEEDN2BBXFpIN/+kaOv9wG89vWbrQ/ dn66PkYxdPDy4qu8lbrejjM0I1ES61o4QvciLwaY4yojO367K2hTy+4hnxY5/F8Ug74D L+rQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Return-Path: Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id b5si21618809plx.64.2019.03.28.09.46.26; Thu, 28 Mar 2019 09:46:41 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727620AbfC1Qpp (ORCPT + 99 others); Thu, 28 Mar 2019 12:45:45 -0400 Received: from mga07.intel.com ([134.134.136.100]:60449 "EHLO mga07.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727540AbfC1Qpm (ORCPT ); Thu, 28 Mar 2019 12:45:42 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 28 Mar 2019 09:45:39 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.60,281,1549958400"; d="scan'208";a="218460227" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by orsmga001.jf.intel.com with ESMTP; 28 Mar 2019 09:45:40 -0700 From: ira.weiny@intel.com To: Andrew Morton , John Hubbard , Michal Hocko , "Kirill A. Shutemov" , Peter Zijlstra , Jason Gunthorpe , Benjamin Herrenschmidt , Paul Mackerras , "David S. Miller" , Martin Schwidefsky , Heiko Carstens , Rich Felker , Yoshinori Sato , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Ralf Baechle , James Hogan Cc: Ira Weiny , linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-rdma@vger.kernel.org, netdev@vger.kernel.org Subject: [PATCH V3 7/7] IB/mthca: Use the new FOLL_LONGTERM flag to get_user_pages_fast() Date: Thu, 28 Mar 2019 01:44:22 -0700 Message-Id: <20190328084422.29911-8-ira.weiny@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190328084422.29911-1-ira.weiny@intel.com> References: <20190328084422.29911-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Ira Weiny Use the new FOLL_LONGTERM to get_user_pages_fast() to protect against FS DAX pages being mapped. Signed-off-by: Ira Weiny --- Changes from V2: drivers/infiniband/hw/mthca/mthca_memfree.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/infiniband/hw/mthca/mthca_memfree.c b/drivers/infiniband/hw/mthca/mthca_memfree.c index 112d2f38e0de..8ff0e90d7564 100644 --- a/drivers/infiniband/hw/mthca/mthca_memfree.c +++ b/drivers/infiniband/hw/mthca/mthca_memfree.c @@ -472,7 +472,8 @@ int mthca_map_user_db(struct mthca_dev *dev, struct mthca_uar *uar, goto out; } - ret = get_user_pages_fast(uaddr & PAGE_MASK, 1, FOLL_WRITE, pages); + ret = get_user_pages_fast(uaddr & PAGE_MASK, 1, + FOLL_WRITE | FOLL_LONGTERM, pages); if (ret < 0) goto out; -- 2.20.1