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 09249CA9ECE for ; Thu, 31 Oct 2019 23:37:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DEA622087F for ; Thu, 31 Oct 2019 23:37:52 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728528AbfJaXho (ORCPT ); Thu, 31 Oct 2019 19:37:44 -0400 Received: from mga02.intel.com ([134.134.136.20]:45455 "EHLO mga02.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727922AbfJaXho (ORCPT ); Thu, 31 Oct 2019 19:37:44 -0400 X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga101.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 Oct 2019 16:37:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,253,1569308400"; d="scan'208";a="375412814" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by orsmga005.jf.intel.com with ESMTP; 31 Oct 2019 16:37:41 -0700 Date: Thu, 31 Oct 2019 16:37:41 -0700 From: Ira Weiny To: John Hubbard Cc: Andrew Morton , Al Viro , Alex Williamson , Benjamin Herrenschmidt , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , Christoph Hellwig , Dan Williams , Daniel Vetter , Dave Chinner , David Airlie , "David S . Miller" , Jan Kara , Jason Gunthorpe , Jens Axboe , Jonathan Corbet , =?iso-8859-1?B?Suly9G1l?= Glisse , Magnus Karlsson , Mauro Carvalho Chehab , Michael Ellerman , Michal Hocko , Mike Kravetz , Paul Mackerras , Shuah Khan , Vlastimil Babka , bpf@vger.kernel.org, dri-devel@lists.freedesktop.org, kvm@vger.kernel.org, linux-block@vger.kernel.org, linux-doc@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-media@vger.kernel.org, linux-rdma@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, netdev@vger.kernel.org, linux-mm@kvack.org, LKML Subject: Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages() Message-ID: <20191031233740.GK14771@iweiny-DESK2.sc.intel.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> <20191030224930.3990755-12-jhubbard@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191030224930.3990755-12-jhubbard@nvidia.com> User-Agent: Mutt/1.11.1 (2018-12-01) Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Wed, Oct 30, 2019 at 03:49:22PM -0700, 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. > Reviewed-by: Ira Weiny > 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 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) { > -- > 2.23.0 > 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=-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 B4335CA9ECB for ; Thu, 31 Oct 2019 23:44:22 +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 6D9E420862 for ; Thu, 31 Oct 2019 23:44:22 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6D9E420862 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 47423S4FYHzF6Nd for ; Fri, 1 Nov 2019 10:44:20 +1100 (AEDT) Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=intel.com (client-ip=192.55.52.43; helo=mga05.intel.com; envelope-from=ira.weiny@intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=intel.com Received: from mga05.intel.com (mga05.intel.com [192.55.52.43]) (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 4741vt4FHXzF4ts for ; Fri, 1 Nov 2019 10:37:45 +1100 (AEDT) X-Amp-Result: UNKNOWN X-Amp-Original-Verdict: FILE UNKNOWN X-Amp-File-Uploaded: False Received: from orsmga005.jf.intel.com ([10.7.209.41]) by fmsmga105.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 31 Oct 2019 16:37:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,253,1569308400"; d="scan'208";a="375412814" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by orsmga005.jf.intel.com with ESMTP; 31 Oct 2019 16:37:41 -0700 Date: Thu, 31 Oct 2019 16:37:41 -0700 From: Ira Weiny To: John Hubbard Subject: Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages() Message-ID: <20191031233740.GK14771@iweiny-DESK2.sc.intel.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> <20191030224930.3990755-12-jhubbard@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20191030224930.3990755-12-jhubbard@nvidia.com> User-Agent: Mutt/1.11.1 (2018-12-01) 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 , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-media@vger.kernel.org, linux-block@vger.kernel.org, =?iso-8859-1?B?Suly9G1l?= Glisse , Al Viro , Dan Williams , Mauro Carvalho Chehab , bpf@vger.kernel.org, Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , Daniel Vetter , linux-fsdevel@vger.kernel.org, Andrew Morton , 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 Wed, Oct 30, 2019 at 03:49:22PM -0700, 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. > Reviewed-by: Ira Weiny > 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 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) { > -- > 2.23.0 > From mboxrd@z Thu Jan 1 00:00:00 1970 From: Ira Weiny Subject: Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages() Date: Thu, 31 Oct 2019 16:37:41 -0700 Message-ID: <20191031233740.GK14771@iweiny-DESK2.sc.intel.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> <20191030224930.3990755-12-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; 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31 Oct 2019 16:37:43 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.68,253,1569308400"; d="scan'208";a="375412814" Received: from iweiny-desk2.sc.intel.com ([10.3.52.157]) by orsmga005.jf.intel.com with ESMTP; 31 Oct 2019 16:37:41 -0700 Date: Thu, 31 Oct 2019 16:37:41 -0700 From: Ira Weiny To: John Hubbard Subject: Re: [PATCH 11/19] net/xdp: set FOLL_PIN via pin_user_pages() Message-ID: <20191031233740.GK14771@iweiny-DESK2.sc.intel.com> References: <20191030224930.3990755-1-jhubbard@nvidia.com> <20191030224930.3990755-12-jhubbard@nvidia.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191030224930.3990755-12-jhubbard@nvidia.com> User-Agent: Mutt/1.11.1 (2018-12-01) 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, Shuah Khan , Jonathan Corbet , linux-rdma@vger.kernel.org, Michael Ellerman , Christoph Hellwig , Jason Gunthorpe , Vlastimil Babka , =?iso-8859-1?Q?Bj=F6rn_T=F6pel?= , linux-media@vger.kernel.org, linux-block@vger.kernel.org, =?iso-8859-1?B?Suly9G1l?= Glisse , Al Viro , Dan Williams , Mauro Carvalho Chehab , bpf@vger.kernel.org, Magnus Karlsson , Jens Axboe , netdev@vger.kernel.org, Alex Williamson , linux-fsdevel@vger.kernel.org, Andrew Morton , 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: <20191031233741.iPHVP14c8UmTc00__qONVcqBiuNKjvTgmkTIgNCQQwg@z> T24gV2VkLCBPY3QgMzAsIDIwMTkgYXQgMDM6NDk6MjJQTSAtMDcwMCwgSm9obiBIdWJiYXJkIHdy b3RlOgo+IENvbnZlcnQgbmV0L3hkcCB0byB1c2UgdGhlIG5ldyBwaW5fbG9uZ3Rlcm1fcGFnZXMo KSBjYWxsLCB3aGljaCBzZXRzCj4gRk9MTF9QSU4uIFNldHRpbmcgRk9MTF9QSU4gaXMgbm93IHJl cXVpcmVkIGZvciBjb2RlIHRoYXQgcmVxdWlyZXMKPiB0cmFja2luZyBvZiBwaW5uZWQgcGFnZXMu Cj4gCgpSZXZpZXdlZC1ieTogSXJhIFdlaW55IDxpcmEud2VpbnlAaW50ZWwuY29tPgoKPiBTaWdu ZWQtb2ZmLWJ5OiBKb2huIEh1YmJhcmQgPGpodWJiYXJkQG52aWRpYS5jb20+Cj4gLS0tCj4gIG5l dC94ZHAveGRwX3VtZW0uYyB8IDQgKystLQo+ICAxIGZpbGUgY2hhbmdlZCwgMiBpbnNlcnRpb25z KCspLCAyIGRlbGV0aW9ucygtKQo+IAo+IGRpZmYgLS1naXQgYS9uZXQveGRwL3hkcF91bWVtLmMg Yi9uZXQveGRwL3hkcF91bWVtLmMKPiBpbmRleCAxNmQ1ZjM1MzE2M2EuLjRkNTZkZmIxMTM5YSAx MDA2NDQKPiAtLS0gYS9uZXQveGRwL3hkcF91bWVtLmMKPiArKysgYi9uZXQveGRwL3hkcF91bWVt LmMKPiBAQCAtMjg1LDggKzI4NSw4IEBAIHN0YXRpYyBpbnQgeGRwX3VtZW1fcGluX3BhZ2VzKHN0 cnVjdCB4ZHBfdW1lbSAqdW1lbSkKPiAgCQlyZXR1cm4gLUVOT01FTTsKPiAgCj4gIAlkb3duX3Jl YWQoJmN1cnJlbnQtPm1tLT5tbWFwX3NlbSk7Cj4gLQlucGdzID0gZ2V0X3VzZXJfcGFnZXModW1l bS0+YWRkcmVzcywgdW1lbS0+bnBncywKPiAtCQkJICAgICAgZ3VwX2ZsYWdzIHwgRk9MTF9MT05H VEVSTSwgJnVtZW0tPnBnc1swXSwgTlVMTCk7Cj4gKwlucGdzID0gcGluX2xvbmd0ZXJtX3BhZ2Vz KHVtZW0tPmFkZHJlc3MsIHVtZW0tPm5wZ3MsIGd1cF9mbGFncywKPiArCQkJCSAgJnVtZW0tPnBn c1swXSwgTlVMTCk7Cj4gIAl1cF9yZWFkKCZjdXJyZW50LT5tbS0+bW1hcF9zZW0pOwo+ICAKPiAg CWlmIChucGdzICE9IHVtZW0tPm5wZ3MpIHsKPiAtLSAKPiAyLjIzLjAKPiAKX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1haWxpbmcgbGlz dApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMuZnJlZWRlc2t0 b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVs