From patchwork Fri Jan 31 06:13:17 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Andrew Morton X-Patchwork-Id: 11359197 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 8F48B139A for ; Fri, 31 Jan 2020 06:13:21 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id 52F972082E for ; Fri, 31 Jan 2020 06:13:21 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="rLkZpUcY" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 52F972082E Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linux-foundation.org Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id C4DBA6B050B; Fri, 31 Jan 2020 01:13:19 -0500 (EST) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id C24CC6B050D; Fri, 31 Jan 2020 01:13:19 -0500 (EST) 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 B126E6B050E; Fri, 31 Jan 2020 01:13:19 -0500 (EST) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0012.hostedemail.com [216.40.44.12]) by kanga.kvack.org (Postfix) with ESMTP id 97C546B050B for ; Fri, 31 Jan 2020 01:13:19 -0500 (EST) Received: from smtpin21.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay05.hostedemail.com (Postfix) with ESMTP id 4280C181AEF0B for ; Fri, 31 Jan 2020 06:13:19 +0000 (UTC) X-FDA: 76436912118.21.farm55_1cf45bd45b205 X-Spam-Summary: 2,0,0,5d3ea510113371b2,d41d8cd98f00b204,akpm@linux-foundation.org,:akpm@linux-foundation.org:alex.williamson@redhat.com:aneesh.kumar@linux.ibm.com:axboe@kernel.dk:bjorn.topel@intel.com:corbet@lwn.net:dan.j.williams@intel.com:daniel.vetter@ffwll.ch:hch@lst.de:hverkuil-cisco@xs4all.nl:ira.weiny@intel.com:jack@suse.cz:jgg@mellanox.com:jgg@ziepe.ca:jglisse@redhat.com:jhubbard@nvidia.com:kirill@shutemov.name:leonro@mellanox.com::mchehab@kernel.org:mm-commits@vger.kernel.org:rppt@linux.ibm.com:torvalds@linux-foundation.org,RULES_HIT:41:152:355:379:800:960:967:973:988:989:1260:1263:1277:1311:1313:1314:1345:1359:1381:1431:1437:1513:1515:1516:1518:1521:1534:1542:1593:1594:1711:1730:1747:1777:1792:2198:2199:2393:2525:2553:2559:2563:2682:2685:2731:2859:2902:2933:2937:2939:2942:2945:2947:2951:2954:3022:3138:3139:3140:3141:3142:3352:3865:3866:3867:3870:3871:3874:3934:3936:3938:3941:3944:3947:3950:3953:3956:3959:4321:4605:5007:6117:6119:6261:6653:6737:6738:7576:8599:8660:90 25:9545: X-HE-Tag: farm55_1cf45bd45b205 X-Filterd-Recvd-Size: 3863 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by imf10.hostedemail.com (Postfix) with ESMTP for ; Fri, 31 Jan 2020 06:13:18 +0000 (UTC) Received: from localhost.localdomain (c-73-231-172-41.hsd1.ca.comcast.net [73.231.172.41]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 7C75424686; Fri, 31 Jan 2020 06:13:17 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1580451198; bh=u33G87TmApHvtHXPi/x7DLstON005CQksSDhf6jaJHI=; h=Date:From:To:Subject:In-Reply-To:From; b=rLkZpUcYq5813B5qp1t24erSHXv24EU4808txMwCrjksxEq9/lrHJqv5KME/1aCQR OY+GX/xyhdwRpDbWShWCmMybfL/g9ygioFRrEDiu5CWX0MAenRTcQe/M08lovkm6Ed tRyPufiljU+JBA+/zczzUuYiKWXUTN1EvDd1dvq0= Date: Thu, 30 Jan 2020 22:13:17 -0800 From: Andrew Morton To: akpm@linux-foundation.org, alex.williamson@redhat.com, aneesh.kumar@linux.ibm.com, axboe@kernel.dk, bjorn.topel@intel.com, corbet@lwn.net, dan.j.williams@intel.com, daniel.vetter@ffwll.ch, hch@lst.de, hverkuil-cisco@xs4all.nl, ira.weiny@intel.com, jack@suse.cz, jgg@mellanox.com, jgg@ziepe.ca, jglisse@redhat.com, jhubbard@nvidia.com, kirill@shutemov.name, leonro@mellanox.com, linux-mm@kvack.org, mchehab@kernel.org, mm-commits@vger.kernel.org, rppt@linux.ibm.com, torvalds@linux-foundation.org Subject: [patch 040/118] net/xdp: set FOLL_PIN via pin_user_pages() Message-ID: <20200131061317.RQwa2-1Hp%akpm@linux-foundation.org> In-Reply-To: <20200130221021.5f0211c56346d5485af07923@linux-foundation.org> User-Agent: s-nail v14.8.16 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: From: John Hubbard Subject: net/xdp: set FOLL_PIN via pin_user_pages() 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_user_pages(). Link: http://lkml.kernel.org/r/20200107224558.2362728-18-jhubbard@nvidia.com Signed-off-by: John Hubbard Acked-by: Björn Töpel Cc: Alex Williamson Cc: Aneesh Kumar K.V Cc: Christoph Hellwig Cc: Daniel Vetter Cc: Dan Williams Cc: Hans Verkuil Cc: Ira Weiny Cc: Jan Kara Cc: Jason Gunthorpe Cc: Jason Gunthorpe Cc: Jens Axboe Cc: Jerome Glisse Cc: Jonathan Corbet Cc: Kirill A. Shutemov Cc: Leon Romanovsky Cc: Mauro Carvalho Chehab Cc: Mike Rapoport Signed-off-by: Andrew Morton --- net/xdp/xdp_umem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/net/xdp/xdp_umem.c~net-xdp-set-foll_pin-via-pin_user_pages +++ a/net/xdp/xdp_umem.c @@ -291,7 +291,7 @@ static int xdp_umem_pin_pages(struct xdp return -ENOMEM; down_read(¤t->mm->mmap_sem); - npgs = get_user_pages(umem->address, umem->npgs, + npgs = pin_user_pages(umem->address, umem->npgs, gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); up_read(¤t->mm->mmap_sem);