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 X-Spam-Level: X-Spam-Status: No, score=-9.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 60547C43381 for ; Wed, 20 Feb 2019 05:33:11 +0000 (UTC) Received: from lists.ozlabs.org (lists.ozlabs.org [203.11.71.2]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A0A0F2147A for ; Wed, 20 Feb 2019 05:33:10 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A0A0F2147A Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Received: from lists.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 4445q81bd2zDqG1 for ; Wed, 20 Feb 2019 16:33:08 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=intel.com (client-ip=192.55.52.151; helo=mga17.intel.com; envelope-from=ira.weiny@intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4445mb2gW6zDqB4 for ; Wed, 20 Feb 2019 16:30:52 +1100 (AEDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga002.fm.intel.com ([10.253.24.26]) by fmsmga107.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Feb 2019 21:30:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,388,1544515200"; d="scan'208";a="144924916" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by fmsmga002.fm.intel.com with ESMTP; 19 Feb 2019 21:30:50 -0800 From: ira.weiny@intel.com To: John Hubbard , Andrew Morton , 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 , Paul Burton , James Hogan Subject: [RESEND PATCH 5/7] IB/hfi1: Use the new FOLL_LONGTERM flag to get_user_pages_fast() Date: Tue, 19 Feb 2019 21:30:38 -0800 Message-Id: <20190220053040.10831-6-ira.weiny@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20190220053040.10831-1-ira.weiny@intel.com> References: <20190220053040.10831-1-ira.weiny@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: linuxppc-dev@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, kvm@vger.kernel.org, linux-sh@vger.kernel.org, linux-fpga@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-mips@vger.kernel.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, Ira Weiny , devel@driverdev.osuosl.org, linux-s390@vger.kernel.org, rds-devel@oss.oracle.com, linux-scsi@vger.kernel.org, linux-rdma@vger.kernel.org, xen-devel@lists.xenproject.org, devel@lists.orangefs.org, linux-media@vger.kernel.org, kvm-ppc@vger.kernel.org, ceph-devel@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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/hfi1/user_pages.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/infiniband/hw/hfi1/user_pages.c b/drivers/infiniband/hw/hfi1/user_pages.c index 78ccacaf97d0..6a7f9cd5a94e 100644 --- a/drivers/infiniband/hw/hfi1/user_pages.c +++ b/drivers/infiniband/hw/hfi1/user_pages.c @@ -104,9 +104,11 @@ int hfi1_acquire_user_pages(struct mm_struct *mm, unsigned long vaddr, size_t np bool writable, struct page **pages) { int ret; + unsigned int gup_flags = writable ? FOLL_WRITE : 0; - ret = get_user_pages_fast(vaddr, npages, writable ? FOLL_WRITE : 0, - pages); + gup_flags |= FOLL_LONGTERM; + + ret = get_user_pages_fast(vaddr, npages, gup_flags, pages); if (ret < 0) return ret; -- 2.20.1