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=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 039E3C33C9E for ; Mon, 25 Nov 2019 04:23:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CF47420815 for ; Mon, 25 Nov 2019 04:23:36 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="ONKY3QdG" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727481AbfKYEXT (ORCPT ); Sun, 24 Nov 2019 23:23:19 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:9156 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727007AbfKYEUQ (ORCPT ); Sun, 24 Nov 2019 23:20:16 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Sun, 24 Nov 2019 20:20:09 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Sun, 24 Nov 2019 20:20:14 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Sun, 24 Nov 2019 20:20:14 -0800 Received: from HQMAIL101.nvidia.com (172.20.187.10) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Mon, 25 Nov 2019 04:20:14 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 04:20:14 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Sun, 24 Nov 2019 20:20:14 -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 13/19] net/xdp: set FOLL_PIN via pin_user_pages() Date: Sun, 24 Nov 2019 20:20:05 -0800 Message-ID: <20191125042011.3002372-14-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191125042011.3002372-1-jhubbard@nvidia.com> References: <20191125042011.3002372-1-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=1574655609; bh=JiuMSIu1KROGnYN0FUrQmmZholMbEQnfhCSo9iAG4Tw=; 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=ONKY3QdGdFPLIpqJ1M3NZ+SiYOJBSlYOzErHB9oJL/A0gGMlbA3tUA8dPpOHvI6xj 28xbdJ3/tzlknUoP581ygaB0OTjn7bYekZ+/29zBnqu9tYJKL5jekTBpsRXSW3K+hE OpvtwGAIeNtBBJjKLBp4Qpvn3A896X4fP2Uevup9poovwznJyNSRXY/WbD7NGB6qp+ YVuhnKik02+1I4KKoiIsT2MQeV9qlooampKf+cfn1iUr3ND9A1eIjns/ydHdTXKY6r RiB9wAu2+NPFyJhT/fmU0ruPyDjwvCvWroGcEtxw//sAV/NBxKkWoOyosBIocHr15N aocwZRbeZe+6Q== Sender: linux-block-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-block@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_user_pages(). Acked-by: Bj=C3=B6rn T=C3=B6pel Signed-off-by: John Hubbard --- net/xdp/xdp_umem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 3049af269fbf..d071003b5e76 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -291,7 +291,7 @@ 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, + npgs =3D pin_user_pages(umem->address, umem->npgs, gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); up_read(¤t->mm->mmap_sem); =20 --=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=-9.5 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, 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 D807AC43215 for ; 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Mon, 25 Nov 2019 04:20:14 +0000 Received: from hqnvemgw03.nvidia.com (10.124.88.68) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Mon, 25 Nov 2019 04:20:14 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by hqnvemgw03.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Sun, 24 Nov 2019 20:20:14 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH 13/19] net/xdp: set FOLL_PIN via pin_user_pages() Date: Sun, 24 Nov 2019 20:20:05 -0800 Message-ID: <20191125042011.3002372-14-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191125042011.3002372-1-jhubbard@nvidia.com> References: <20191125042011.3002372-1-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=1574655609; bh=JiuMSIu1KROGnYN0FUrQmmZholMbEQnfhCSo9iAG4Tw=; 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Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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(). Acked-by: Bj=C3=B6rn T=C3=B6pel Signed-off-by: John Hubbard --- net/xdp/xdp_umem.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/net/xdp/xdp_umem.c b/net/xdp/xdp_umem.c index 3049af269fbf..d071003b5e76 100644 --- a/net/xdp/xdp_umem.c +++ b/net/xdp/xdp_umem.c @@ -291,7 +291,7 @@ 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, + npgs =3D pin_user_pages(umem->address, umem->npgs, gup_flags | FOLL_LONGTERM, &umem->pgs[0], NULL); up_read(¤t->mm->mmap_sem); =20 --=20 2.24.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH 13/19] net/xdp: set FOLL_PIN via pin_user_pages() Date: Sun, 24 Nov 2019 20:20:05 -0800 Message-ID: <20191125042011.3002372-14-jhubbard@nvidia.com> References: <20191125042011.3002372-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from hqemgate15.nvidia.com (hqemgate15.nvidia.com [216.228.121.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3E74189DE3 for ; Mon, 25 Nov 2019 04:20:15 +0000 (UTC) In-Reply-To: <20191125042011.3002372-1-jhubbard@nvidia.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Andrew Morton 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 List-Id: dri-devel@lists.freedesktop.org Q29udmVydCBuZXQveGRwIHRvIHVzZSB0aGUgbmV3IHBpbl9sb25ndGVybV9wYWdlcygpIGNhbGws IHdoaWNoIHNldHMKRk9MTF9QSU4uIFNldHRpbmcgRk9MTF9QSU4gaXMgbm93IHJlcXVpcmVkIGZv ciBjb2RlIHRoYXQgcmVxdWlyZXMKdHJhY2tpbmcgb2YgcGlubmVkIHBhZ2VzLgoKSW4gcGFydGlh bCBhbnRpY2lwYXRpb24gb2YgdGhpcyB3b3JrLCB0aGUgbmV0L3hkcCBjb2RlIHdhcyBhbHJlYWR5 CmNhbGxpbmcgcHV0X3VzZXJfcGFnZSgpIGluc3RlYWQgb2YgcHV0X3BhZ2UoKS4gVGhlcmVmb3Jl LCBpbiBvcmRlciB0bwpjb252ZXJ0IGZyb20gdGhlIGdldF91c2VyX3BhZ2VzKCkvcHV0X3BhZ2Uo KSBtb2RlbCwgdG8gdGhlCnBpbl91c2VyX3BhZ2VzKCkvcHV0X3VzZXJfcGFnZSgpIG1vZGVsLCB0 aGUgb25seSBjaGFuZ2UgcmVxdWlyZWQKaGVyZSBpcyB0byBjaGFuZ2UgZ2V0X3VzZXJfcGFnZXMo KSB0byBwaW5fdXNlcl9wYWdlcygpLgoKQWNrZWQtYnk6IEJqw7ZybiBUw7ZwZWwgPGJqb3JuLnRv cGVsQGludGVsLmNvbT4KU2lnbmVkLW9mZi1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlk aWEuY29tPgotLS0KIG5ldC94ZHAveGRwX3VtZW0uYyB8IDIgKy0KIDEgZmlsZSBjaGFuZ2VkLCAx IGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL25ldC94ZHAveGRwX3Vt ZW0uYyBiL25ldC94ZHAveGRwX3VtZW0uYwppbmRleCAzMDQ5YWYyNjlmYmYuLmQwNzEwMDNiNWU3 NiAxMDA2NDQKLS0tIGEvbmV0L3hkcC94ZHBfdW1lbS5jCisrKyBiL25ldC94ZHAveGRwX3VtZW0u YwpAQCAtMjkxLDcgKzI5MSw3IEBAIHN0YXRpYyBpbnQgeGRwX3VtZW1fcGluX3BhZ2VzKHN0cnVj dCB4ZHBfdW1lbSAqdW1lbSkKIAkJcmV0dXJuIC1FTk9NRU07CiAKIAlkb3duX3JlYWQoJmN1cnJl bnQtPm1tLT5tbWFwX3NlbSk7Ci0JbnBncyA9IGdldF91c2VyX3BhZ2VzKHVtZW0tPmFkZHJlc3Ms IHVtZW0tPm5wZ3MsCisJbnBncyA9IHBpbl91c2VyX3BhZ2VzKHVtZW0tPmFkZHJlc3MsIHVtZW0t Pm5wZ3MsCiAJCQkgICAgICBndXBfZmxhZ3MgfCBGT0xMX0xPTkdURVJNLCAmdW1lbS0+cGdzWzBd LCBOVUxMKTsKIAl1cF9yZWFkKCZjdXJyZW50LT5tbS0+bW1hcF9zZW0pOwogCi0tIAoyLjI0LjAK Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZl bCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xp c3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA== 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 E00AFC33CAA for ; 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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: <20191125042005.crX-cOuVjz7GTJbyTnTx4LRMUAkGWHSGaHRBrhOUdp0@z> Q29udmVydCBuZXQveGRwIHRvIHVzZSB0aGUgbmV3IHBpbl9sb25ndGVybV9wYWdlcygpIGNhbGws IHdoaWNoIHNldHMKRk9MTF9QSU4uIFNldHRpbmcgRk9MTF9QSU4gaXMgbm93IHJlcXVpcmVkIGZv ciBjb2RlIHRoYXQgcmVxdWlyZXMKdHJhY2tpbmcgb2YgcGlubmVkIHBhZ2VzLgoKSW4gcGFydGlh bCBhbnRpY2lwYXRpb24gb2YgdGhpcyB3b3JrLCB0aGUgbmV0L3hkcCBjb2RlIHdhcyBhbHJlYWR5 CmNhbGxpbmcgcHV0X3VzZXJfcGFnZSgpIGluc3RlYWQgb2YgcHV0X3BhZ2UoKS4gVGhlcmVmb3Jl LCBpbiBvcmRlciB0bwpjb252ZXJ0IGZyb20gdGhlIGdldF91c2VyX3BhZ2VzKCkvcHV0X3BhZ2Uo KSBtb2RlbCwgdG8gdGhlCnBpbl91c2VyX3BhZ2VzKCkvcHV0X3VzZXJfcGFnZSgpIG1vZGVsLCB0 aGUgb25seSBjaGFuZ2UgcmVxdWlyZWQKaGVyZSBpcyB0byBjaGFuZ2UgZ2V0X3VzZXJfcGFnZXMo KSB0byBwaW5fdXNlcl9wYWdlcygpLgoKQWNrZWQtYnk6IEJqw7ZybiBUw7ZwZWwgPGJqb3JuLnRv cGVsQGludGVsLmNvbT4KU2lnbmVkLW9mZi1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlk aWEuY29tPgotLS0KIG5ldC94ZHAveGRwX3VtZW0uYyB8IDIgKy0KIDEgZmlsZSBjaGFuZ2VkLCAx IGluc2VydGlvbigrKSwgMSBkZWxldGlvbigtKQoKZGlmZiAtLWdpdCBhL25ldC94ZHAveGRwX3Vt ZW0uYyBiL25ldC94ZHAveGRwX3VtZW0uYwppbmRleCAzMDQ5YWYyNjlmYmYuLmQwNzEwMDNiNWU3 NiAxMDA2NDQKLS0tIGEvbmV0L3hkcC94ZHBfdW1lbS5jCisrKyBiL25ldC94ZHAveGRwX3VtZW0u YwpAQCAtMjkxLDcgKzI5MSw3IEBAIHN0YXRpYyBpbnQgeGRwX3VtZW1fcGluX3BhZ2VzKHN0cnVj dCB4ZHBfdW1lbSAqdW1lbSkKIAkJcmV0dXJuIC1FTk9NRU07CiAKIAlkb3duX3JlYWQoJmN1cnJl bnQtPm1tLT5tbWFwX3NlbSk7Ci0JbnBncyA9IGdldF91c2VyX3BhZ2VzKHVtZW0tPmFkZHJlc3Ms IHVtZW0tPm5wZ3MsCisJbnBncyA9IHBpbl91c2VyX3BhZ2VzKHVtZW0tPmFkZHJlc3MsIHVtZW0t Pm5wZ3MsCiAJCQkgICAgICBndXBfZmxhZ3MgfCBGT0xMX0xPTkdURVJNLCAmdW1lbS0+cGdzWzBd LCBOVUxMKTsKIAl1cF9yZWFkKCZjdXJyZW50LT5tbS0+bW1hcF9zZW0pOwogCi0tIAoyLjI0LjAK Cl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCmRyaS1kZXZl bCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVkZXNrdG9wLm9yZwpodHRwczovL2xp c3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZvL2RyaS1kZXZlbA==