Received: by 2002:ac0:bc90:0:0:0:0:0 with SMTP id a16csp38201img; Sun, 17 Mar 2019 19:37:42 -0700 (PDT) X-Google-Smtp-Source: APXvYqwT+Lnrl+OnVRjAbyM7JpaWX813PZieMmmUfk/S4tKJx0OTIWMAVKP7oZ3HbxB/Jaei7Jh5 X-Received: by 2002:a63:ed45:: with SMTP id m5mr15453505pgk.265.1552876662715; Sun, 17 Mar 2019 19:37:42 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1552876662; cv=none; d=google.com; s=arc-20160816; b=JX8u1Rq4R0kcQbR+X2bj6zGmXb73bBVucaXrVwofGjEpG2y9wJbKwicPuyCJeH08QQ 2bmy0gJxuMyqsl7saL20sloDatqk/cg+wBE8w3Qu8gUprweoGmdCvePZPp3rWYVYpP9i qJFdpADsrhxn6sskr1KWphSTmDCHI2Dz106ILvL4K+qnb03r1id2fPku/9AydX8p26HM 38LveZvSbwLiGNekANGOnxZjAfjsyUJoj8IUEmyRq4793Fc3D4Luq+HWokts/c7VGW/X 90qwexViWEoLLcJlBmPaVlOosgn1YQ9BkOkFmU94iPFjmzRMHaXwADqSorALpkZt7HuF 3RGA== 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=Z2oLMpEtZJkOWhiVxDwCbgAywRjmrernHVpSPAUXgTY=; b=YN7X4Z5+tRWYRAJKG91p2cWzlvHkK8WAWq3ELNsY3H4gqlgXQX48HyQc0mTzFSwcJh 3MWSO/xrSm0NEcioLNn2sn73YrW58wY7R3+EGl1kJmFxvbO1GFJjHidh1HN/aGh24J6T TF58+npYr4hzgs7yDQcpWpo0VCZNoifbRZbK3jpq7NYP3bPKbwHFNDDc5cBJtcTsBxVO 3endcfV1YG/NcNGWPJUFflBNKRXrWhL4RZ0CdcorlJcRxUsM+6SrbZcK155b8fHS1Nyj g2WkFBdDmuxsto21oGX1RVNFS8AHXVompyY9iIjfCLj6m1eM22vbNZi9ruTBd6ko+W37 nHYA== 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 f1si8214516plr.55.2019.03.17.19.37.27; Sun, 17 Mar 2019 19:37:42 -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 S1727890AbfCRCg3 (ORCPT + 99 others); Sun, 17 Mar 2019 22:36:29 -0400 Received: from mga12.intel.com ([192.55.52.136]:39310 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727806AbfCRCgH (ORCPT ); Sun, 17 Mar 2019 22:36:07 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 17 Mar 2019 19:36:05 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,491,1544515200"; d="scan'208";a="155877430" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by fmsmga001.fm.intel.com with ESMTP; 17 Mar 2019 19:36:05 -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: [RESEND 7/7] IB/mthca: Use the new FOLL_LONGTERM flag to get_user_pages_fast() Date: Sun, 17 Mar 2019 11:34:38 -0700 Message-Id: <20190317183438.2057-8-ira.weiny@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190317183438.2057-1-ira.weiny@intel.com> References: <20190317183438.2057-1-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 --- 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