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=-8.2 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED,USER_AGENT_SANE_1 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 C8A0ACA9EC7 for ; Sat, 2 Nov 2019 21:10:24 +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 37FFA20862 for ; Sat, 2 Nov 2019 21:10:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 37FFA20862 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 bilbo.ozlabs.org (lists.ozlabs.org [IPv6:2401:3900:2:1::3]) by lists.ozlabs.org (Postfix) with ESMTP id 475BXr1nl8zF6tw for ; Sun, 3 Nov 2019 08:10:20 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=192.55.52.93; helo=mga11.intel.com; envelope-from=bjorn.topel@intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) (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 474x343lB3zF5BM for ; Sat, 2 Nov 2019 22:01:57 +1100 (AEDT) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga003.fm.intel.com ([10.253.24.29]) by fmsmga102.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 02 Nov 2019 04:01:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,259,1569308400"; d="scan'208";a="206632673" Received: from mohseni-mobl2.ger.corp.intel.com (HELO btopel-mobl.ger.intel.com) ([10.252.42.93]) by FMSMGA003.fm.intel.com with ESMTP; 02 Nov 2019 04:01:44 -0700 Subject: Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages() To: John Hubbard , Andrew Morton References: <20191030224930.3990755-1-jhubbard@nvidia.com> <20191030224930.3990755-12-jhubbard@nvidia.com> From: =?UTF-8?B?QmrDtnJuIFTDtnBlbA==?= Message-ID: <67cd4960-bc17-9603-8d4d-b7b2f68bb373@intel.com> Date: Sat, 2 Nov 2019 12:01:43 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101 Thunderbird/68.1.2 MIME-Version: 1.0 In-Reply-To: <20191030224930.3990755-12-jhubbard@nvidia.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Mailman-Approved-At: Sun, 03 Nov 2019 08:04:41 +1100 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: Michal Hocko , Jan Kara , kvm@vger.kernel.org, linux-doc@vger.kernel.org, David Airlie , Dave Chinner , dri-devel@lists.freedesktop.org, LKML , linux-mm@kvack.org, Paul Mackerras , linux-kselftest@vger.kernel.org, Shuah Khan , Jonathan Corbet , linux-rdma@vger.kernel.org, Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , linux-media@vger.kernel.org, Ira Weiny , linux-block@vger.kernel.org, =?UTF-8?B?SsOpcsO0bWUgR2xpc3Nl?= , Al Viro , Dan Williams , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , Daniel Vetter , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" On 2019-10-30 23:49, John Hubbard wrote: > Convert net/xdp to use the new pin_longterm_pages() call, which sets > FOLL_PIN. Setting FOLL_PIN is now required for code that requires > tracking of pinned pages. > > Signed-off-by: John Hubbard Acked-by: Björn Töpel > --- > net/xdp/xdp_umem.c | 4 ++-- > 1 file changed, 2 insertions(+), 2 deletions(-) > > diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c > index 16d5f353163a..4d56dfb1139a 100644 > --- a/net/xdp/xdp_umem.c > +++ b/net/xdp/xdp_umem.c > @@ -285,8 +285,8 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem) > return -ENOMEM; > > down_read(¤t->mm->mmap_sem); > - npgs = get_user_pages(umem->address, umem->npgs, > - gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); > + npgs = pin_longterm_pages(umem->address, umem->npgs, gup_flags, > + &umem->pgs[0], NULL); > up_read(¤t->mm->mmap_sem); > > if (npgs != umem->npgs) { >