From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v5 15/24] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Thu, 14 Nov 2019 21:53:31 -0800 Message-ID: <20191115055340.1825745-16-jhubbard@nvidia.com> References: <20191115055340.1825745-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20191115055340.1825745-1-jhubbard@nvidia.com> Sender: netdev-owner@vger.kernel.org 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 List-Id: dri-devel@lists.freedesktop.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(). In partial anticipation of this work, the io_uring 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_user_pages(). Signed-off-by: John Hubbard --- fs/io_uring.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/fs/io_uring.c b/fs/io_uring.c index f9a38998f2fc..cff64bd00db9 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3433,7 +3433,7 @@ 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, + pret =3D pin_user_pages(ubuf, nr_pages, FOLL_WRITE | FOLL_LONGTERM, pages, vmas); if (pret =3D=3D nr_pages) { --=20 2.24.0 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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, 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 A2EE5C43215 for ; Fri, 15 Nov 2019 05:54:12 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 81E4520715 for ; Fri, 15 Nov 2019 05:54:12 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 81E4520715 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=nvidia.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7D7B66E178; Fri, 15 Nov 2019 05:53:57 +0000 (UTC) Received: from hqemgate14.nvidia.com (hqemgate14.nvidia.com [216.228.121.143]) by gabe.freedesktop.org (Postfix) with ESMTPS id AF3D16E178 for ; Fri, 15 Nov 2019 05:53:52 +0000 (UTC) Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Thu, 14 Nov 2019 21:53:49 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Thu, 14 Nov 2019 21:53:46 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Thu, 14 Nov 2019 21:53:46 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 15 Nov 2019 05:53:45 +0000 Received: from HQMAIL111.nvidia.com (172.20.187.18) by HQMAIL109.nvidia.com (172.20.187.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 15 Nov 2019 05:53:45 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Fri, 15 Nov 2019 05:53:45 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Thu, 14 Nov 2019 21:53:44 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v5 15/24] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Thu, 14 Nov 2019 21:53:31 -0800 Message-ID: <20191115055340.1825745-16-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191115055340.1825745-1-jhubbard@nvidia.com> References: <20191115055340.1825745-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Original-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1573797229; bh=H3Pv+X/E2ADJL743nubRyIZke6yfCnEtQmkzOK1Q+7E=; 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=SDZh9/V2j+j+fqnfYmPQ6cFVogbjfZYPSWwnnZa2TarMBSWT0CVCtfGguEXXpTSn6 Y2AKomUABH48FYKAeSJrAVtNvCFRGPvoZRn8nfUl23B/mgL+sUoGIN5IN4lAlHlwLB ZbYdrP+UAktcn431I6R1DL6L+c674fLvmtVCj4xD3kmQ58RpVHOzspmiE433RTv1Nu rOGpeo1HkyHMwmeP4v5IZ3VOPqbbOyBvHLyE6wdHVsXhWM4TKovt/gRziBdVA38vpO HZmND0qTCkizK+DtAbj1rQ/PPDpDML751gcuVXFTlO6zrMaxXxni3XABf7Q0awaNEV X7SOb8QqodUlg== X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development 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, Ira Weiny , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?UTF-8?q?Bj=C3=B6rn=20T=C3=B6pel?= , linux-media@vger.kernel.org, Shuah Khan , John Hubbard , linux-block@vger.kernel.org, =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= , Al Viro , Dan Williams , Mauro Carvalho Chehab , Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , linux-fsdevel@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, "David S . Miller" , Mike Kravetz Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Message-ID: <20191115055331.VgKOxc2UyEKgLiwCcZZ5Upf25i_CgphzWtC1L4FqbD0@z> Q29udmVydCBmcy9pb191cmluZyB0byB1c2UgdGhlIG5ldyBwaW5fdXNlcl9wYWdlcygpIGNhbGws IHdoaWNoIHNldHMKRk9MTF9QSU4uIFNldHRpbmcgRk9MTF9QSU4gaXMgbm93IHJlcXVpcmVkIGZv ciBjb2RlIHRoYXQgcmVxdWlyZXMKdHJhY2tpbmcgb2YgcGlubmVkIHBhZ2VzLCBhbmQgdGhlcmVm b3JlIGZvciBhbnkgY29kZSB0aGF0IGNhbGxzCnB1dF91c2VyX3BhZ2UoKS4KCkluIHBhcnRpYWwg YW50aWNpcGF0aW9uIG9mIHRoaXMgd29yaywgdGhlIGlvX3VyaW5nIGNvZGUgd2FzIGFscmVhZHkK Y2FsbGluZyBwdXRfdXNlcl9wYWdlKCkgaW5zdGVhZCBvZiBwdXRfcGFnZSgpLiBUaGVyZWZvcmUs IGluIG9yZGVyIHRvCmNvbnZlcnQgZnJvbSB0aGUgZ2V0X3VzZXJfcGFnZXMoKS9wdXRfcGFnZSgp IG1vZGVsLCB0byB0aGUKcGluX3VzZXJfcGFnZXMoKS9wdXRfdXNlcl9wYWdlKCkgbW9kZWwsIHRo ZSBvbmx5IGNoYW5nZSByZXF1aXJlZApoZXJlIGlzIHRvIGNoYW5nZSBnZXRfdXNlcl9wYWdlcygp IHRvIHBpbl91c2VyX3BhZ2VzKCkuCgpTaWduZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpodWJi YXJkQG52aWRpYS5jb20+Ci0tLQogZnMvaW9fdXJpbmcuYyB8IDIgKy0KIDEgZmlsZSBjaGFuZ2Vk LCAxIGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL2ZzL2lvX3VyaW5n LmMgYi9mcy9pb191cmluZy5jCmluZGV4IGY5YTM4OTk4ZjJmYy4uY2ZmNjRiZDAwZGI5IDEwMDY0 NAotLS0gYS9mcy9pb191cmluZy5jCisrKyBiL2ZzL2lvX3VyaW5nLmMKQEAgLTM0MzMsNyArMzQz Myw3IEBAIHN0YXRpYyBpbnQgaW9fc3FlX2J1ZmZlcl9yZWdpc3RlcihzdHJ1Y3QgaW9fcmluZ19j dHggKmN0eCwgdm9pZCBfX3VzZXIgKmFyZywKIAogCQlyZXQgPSAwOwogCQlkb3duX3JlYWQoJmN1 cnJlbnQtPm1tLT5tbWFwX3NlbSk7Ci0JCXByZXQgPSBnZXRfdXNlcl9wYWdlcyh1YnVmLCBucl9w YWdlcywKKwkJcHJldCA9IHBpbl91c2VyX3BhZ2VzKHVidWYsIG5yX3BhZ2VzLAogCQkJCSAgICAg IEZPTExfV1JJVEUgfCBGT0xMX0xPTkdURVJNLAogCQkJCSAgICAgIHBhZ2VzLCB2bWFzKTsKIAkJ aWYgKHByZXQgPT0gbnJfcGFnZXMpIHsKLS0gCjIuMjQuMAoKX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlzdApkcmktZGV2 ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0b3Aub3JnL21h aWxtYW4vbGlzdGluZm8vZHJpLWRldmVs