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=ham 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 6F57DCA9EC7 for ; Wed, 30 Oct 2019 22:49:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 43CB421A49 for ; Wed, 30 Oct 2019 22:49:53 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="kR+tPouB" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727704AbfJ3Wtv (ORCPT ); Wed, 30 Oct 2019 18:49:51 -0400 Received: from hqemgate15.nvidia.com ([216.228.121.64]:5281 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727695AbfJ3Wtu (ORCPT ); Wed, 30 Oct 2019 18:49:50 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Wed, 30 Oct 2019 15:49:54 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Wed, 30 Oct 2019 15:49:47 -0700 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Wed, 30 Oct 2019 15:49:47 -0700 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Wed, 30 Oct 2019 22:49:47 +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; Wed, 30 Oct 2019 22:49:45 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Wed, 30 Oct 2019 15:49:45 -0700 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 10/19] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Wed, 30 Oct 2019 15:49:21 -0700 Message-ID: <20191030224930.3990755-11-jhubbard@nvidia.com> X-Mailer: git-send-email 2.23.0 In-Reply-To: <20191030224930.3990755-1-jhubbard@nvidia.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public Content-Transfer-Encoding: quoted-printable Content-Type: text/plain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1572475794; bh=bbL8FR4bzETk+x2+h29SWzIPj5uQjRkW4dL7+03upow=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:MIME-Version:X-NVConfidentiality: Content-Transfer-Encoding:Content-Type; b=kR+tPouBYC0ki827JDMeuNTByE9oIS5IDkovYzuvxCfKraeRE1xhbD+GOuKjda4Em wTplOT5bMiWa8BiaEHL3DKSpG8hqxFlrmCesFeMnbUYq9P1VfB5Aknw2LfXHZadx61 XIn5Hk9/d25I2iGTdlvgsBAJtZ42RCNbPATO9yzUrOBld+IU2VDQsYVK6KL9TsCU6a YxhKY4Qm/Nq4yZ1x82Ms8dt1DPfBsg0RcS/BQFOIl5tkHUes2ShpUz9fJI0YZorwvG K9BJvrNgryOUaUnfVnmo/oNPgkf3tG6AdeuQiOhCRbBpph8T9Ytab2k7nIUs3cE6Z5 zqKFG6B2aYtEA== Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org Convert fs/io_uring to use the new pin_user_pages() call, which sets FOLL_PIN. Setting FOLL_PIN is now required for code that requires tracking of pinned pages, and therefore for any code that calls put_user_page(). Signed-off-by: John Hubbard --- fs/io_uring.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index a30c4f622cb3..d3924b1760eb 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3431,9 +3431,8 @@ static int io_sqe_buffer_register(struct io_ring_ctx = *ctx, void __user *arg, =20 ret =3D 0; down_read(¤t->mm->mmap_sem); - pret =3D get_user_pages(ubuf, nr_pages, - FOLL_WRITE | FOLL_LONGTERM, - pages, vmas); + pret =3D pin_longterm_pages(ubuf, nr_pages, FOLL_WRITE, pages, + vmas); if (pret =3D=3D nr_pages) { /* don't support file backed memory */ for (j =3D 0; j < nr_pages; j++) { --=20 2.23.0