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=-9.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,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 59CC3C43331 for ; Tue, 12 Nov 2019 00:09:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2DEEA2184C for ; Tue, 12 Nov 2019 00:09:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="Daw1gXi5" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727898AbfKLAJF (ORCPT ); Mon, 11 Nov 2019 19:09:05 -0500 Received: from hqemgate16.nvidia.com ([216.228.121.65]:3377 "EHLO hqemgate16.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727527AbfKLAH0 (ORCPT ); Mon, 11 Nov 2019 19:07:26 -0500 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate16.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 11 Nov 2019 16:06:25 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Mon, 11 Nov 2019 16:07:21 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Mon, 11 Nov 2019 16:07:21 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Nov 2019 00:07:21 +0000 Received: from rnnvemgw01.nvidia.com (10.128.109.123) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Tue, 12 Nov 2019 00:07:20 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Mon, 11 Nov 2019 16:07:19 -0800 From: John Hubbard To: Andrew Morton CC: Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Ira Weiny , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , , , , , , , , , , , , , LKML , John Hubbard Subject: [PATCH v3 15/23] net/xdp: set FOLL_PIN via pin_user_pages() Date: Mon, 11 Nov 2019 16:06:52 -0800 Message-ID: <20191112000700.3455038-16-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191112000700.3455038-1-jhubbard@nvidia.com> References: <20191112000700.3455038-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1573517185; bh=7NW5FVByU2q47q8YXJg0DLnVCFYBzjS19tQtlG28KDY=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Type:Content-Transfer-Encoding; b=Daw1gXi5Nf8jhwQGkFuKATjIjdGTo/8QHCXHZE7HOCQsxIKzJaEMCfUmt1gepoDlz wAtZERC/OIZdJ+dC7qyRHHNRHe+c8VRZ6WxtX0ujRzrLUzUNNhd/2aUReq75nVQOnB hXYlG0kMXNbnL0FAO1VMoSv0HZQiFBzWo/Le+8G03Vf47g41hmlrLcQOpTobmPcOfd 3gyGQm9Q39Wz3SpcrYOGhVOaHpFtHfuoItD2ZOM8vvYKso23c3EiSIlN3hYPQ0r19n XdosFXuIQ6dG3YNzHqIrFPxXBYW8pEAU+rzMaRN4Ou24/T3o3hVX/yxtTg/YPDbivh 8HR5xsqA3ACUQ== Sender: bpf-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org 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. In partial anticipation of this work, the net/xdp code was already calling put_user_page() instead of put_page(). Therefore, in order to convert from the get_user_pages()/put_page() model, to the pin_user_pages()/put_user_page() model, the only change required here is to change get_user_pages() to pin_longterm_pages(). Reviewed-by: Ira Weiny Acked-by: Bj=C3=B6rn T=C3=B6pel Signed-off-by: John Hubbard --- 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 3049af269fbf..66c814863cfd 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -291,8 +291,8 @@ static int xdp_umem_pin_pages(struct xdp_umem *umem) return -ENOMEM; =20 down_read(¤t->mm->mmap_sem); - npgs =3D get_user_pages(umem->address, umem->npgs, - gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); + npgs =3D pin_longterm_pages(umem->address, umem->npgs, gup_flags, + &umem->pgs[0], NULL); up_read(¤t->mm->mmap_sem); =20 if (npgs !=3D umem->npgs) { --=20 2.24.0