From patchwork Thu Mar 28 08:44:22 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ira Weiny X-Patchwork-Id: 10875371 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BF55E1390 for ; Thu, 28 Mar 2019 16:45:59 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AECA028DA5 for ; Thu, 28 Mar 2019 16:45:59 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id A321328DDF; Thu, 28 Mar 2019 16:45:59 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.4 required=2.0 tests=BAYES_00,DATE_IN_PAST_06_12, MAILING_LIST_MULTI,RCVD_IN_DNSWL_NONE autolearn=no version=3.3.1 Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 50B6428DA5 for ; Thu, 28 Mar 2019 16:45:59 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 530046B026D; Thu, 28 Mar 2019 12:45:43 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id 466BA6B026F; Thu, 28 Mar 2019 12:45:43 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 355136B0270; Thu, 28 Mar 2019 12:45:43 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from mail-pg1-f199.google.com (mail-pg1-f199.google.com [209.85.215.199]) by kanga.kvack.org (Postfix) with ESMTP id E693A6B026D for ; Thu, 28 Mar 2019 12:45:42 -0400 (EDT) Received: by mail-pg1-f199.google.com with SMTP id o4so16680999pgl.6 for ; Thu, 28 Mar 2019 09:45:42 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-original-authentication-results:x-gm-message-state:from:to:cc :subject:date:message-id:in-reply-to:references:mime-version :content-transfer-encoding; bh=I94rqhDRqoRaPN0ZLeXgilZosbFseXlIxesNkZOMp5Q=; b=HRgBEu1R2rV4AdToORuvCIbWRqdsa6RnoJQFLgnbm5X0QqMRhBrit0+6S4R4V+Lu5U a9wVX8foiiMmR7MO7j1qaVpisPfanHd6AU1coMV/u0LFY3esmbr7KdBwN4+xYX4idnYf YFX8qzgpUkt+nIFUtZ9DZzdRgKXNhwEH0vgB6T3qk3sJpI/gaclYMzU009JiDDR6Y04s XJclC7unNFr0dk0sIel04KP7hZyJMhcue99w98X2f/SaV+lkhSfszJEAa/0YgywL2l/Y BNKUY+Bn5bUMo2NLpadnh/DdTz6SD7q2K1OsCv6RTIXeaDAOGzw2URort4tCu4BmICon OJaA== X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of ira.weiny@intel.com designates 134.134.136.100 as permitted sender) smtp.mailfrom=ira.weiny@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com X-Gm-Message-State: APjAAAVnEWe/uKSOtKAJsS93U2qJxBa6xJ14pf1HBA0Y9EYokwlQsDY4 3mbTXdb3tuNJmzfuA/lWXQZWPDkFsLwMyrAzvMMBmUAT8mYx2+w01/HxfVS+2Ebp4djQWTxlwvP wgGvHWDhmuZPmJwpgq5RtTqawS99QeY2CPuT2qk5gqqItEGvnQLPRVWl4CktFVvXrwA== X-Received: by 2002:a63:be02:: with SMTP id l2mr18808673pgf.48.1553791542609; Thu, 28 Mar 2019 09:45:42 -0700 (PDT) X-Google-Smtp-Source: APXvYqy+nNSyKte6CmiB8FyxeNo0cJskpqU9fkJa5U2fI86lnQnuueCZ2Y+lo+UsH5Icag6r3r1P X-Received: by 2002:a63:be02:: with SMTP id l2mr18808626pgf.48.1553791541876; Thu, 28 Mar 2019 09:45:41 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1553791541; cv=none; d=google.com; s=arc-20160816; b=h/V/DSfJf+1NuE/xbiA6WVLS1D6lGn81/+3LiWw5bRN6aDfpqh+sa5B2ZAoN1LrT5c IL+hBbki78SkcYSOBPmEDFGclFqsbuA8K9GfY/jJF9Tf/ND0D1D+K3z8nmblXfgTiTWG ax9N9CK/OwBVf+7EjplnC79zmohB8Xk0bMfzeq0dgpJXHe+idfg/we/WsFqfzQdxQR2e IawUmWrAgibWw5o4EJK1S5C+zK8ZLayPdN1IzpAHZ6aYz8Bf+K/NKvL/jVNyjeI/u15m ZyTEd6GH/PRu1P5Ol31KglXixNNwUlYF9KFrWX7QH8+5qLeWzgOTabi0qeToTDZWOi7E e33w== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from; bh=I94rqhDRqoRaPN0ZLeXgilZosbFseXlIxesNkZOMp5Q=; b=YBObYd6HXb0EON901zX/XXpe3EiNufxDF4UVMPzYgbViRIKTmJGeWR1fWlPpIdh8J7 yO37uub7tZjLD+JiftTEh8mPRQq2YQiHThvtohIhcaQMPLRzhewKJkwoV3lvjspbOKQR Tqbnsqr7pvap8XmeX8wj8Cm0bMkyDrn9IuPBSs/1DRRPRPdVQpz/BOwLAYGLgTOhrIqG 7DHvT+TzjrfgV0mkKI6Hj7xgjZ2IMM7IX3om8P2wCT7GuolTOAxoGQeYQMDFyVZQ1Wfa 9bgpptNvU+YD4JJypeHOBfRnEaVjQQo+JoH9ImYDI2OhVhGlXfY1X+UtUexfjddvb/3/ bPvQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of ira.weiny@intel.com designates 134.134.136.100 as permitted sender) smtp.mailfrom=ira.weiny@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com Received: from mga07.intel.com (mga07.intel.com. [134.134.136.100]) by mx.google.com with ESMTPS id 31si22686092plb.39.2019.03.28.09.45.41 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 28 Mar 2019 09:45:41 -0700 (PDT) Received-SPF: pass (google.com: domain of ira.weiny@intel.com designates 134.134.136.100 as permitted sender) client-ip=134.134.136.100; Authentication-Results: mx.google.com; spf=pass (google.com: domain of ira.weiny@intel.com designates 134.134.136.100 as permitted sender) smtp.mailfrom=ira.weiny@intel.com; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=intel.com 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 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: X-Virus-Scanned: ClamAV using ClamSMTP 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;