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=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 8BEF1C17449 for ; Tue, 12 Nov 2019 00:07:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5D2982196E for ; Tue, 12 Nov 2019 00:07:25 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="dtrLh9SW" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727503AbfKLAHX (ORCPT ); Mon, 11 Nov 2019 19:07:23 -0500 Received: from hqemgate14.nvidia.com ([216.228.121.143]:10704 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726949AbfKLAHW (ORCPT ); Mon, 11 Nov 2019 19:07:22 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Mon, 11 Nov 2019 16:07:23 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 11 Nov 2019 16:07:20 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 11 Nov 2019 16:07:20 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Nov 2019 00:07:20 +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; Tue, 12 Nov 2019 00:07:19 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7,5,8,10121) id ; Mon, 11 Nov 2019 16:07:18 -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 v3 14/23] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Mon, 11 Nov 2019 16:06:51 -0800 Message-ID: <20191112000700.3455038-15-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191112000700.3455038-1-jhubbard@nvidia.com> References: <20191112000700.3455038-1-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=1573517243; bh=JGzVxjkq7RUQ8oMNLIEnYl2kvvauj6PckGww94CdhYA=; 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=dtrLh9SWLRdw6PX3vOEYVbDwP5rXYl+Z084f1/41lIx5jOckvj48bpZIb3QKiKvS8 EiUpJMH10AO0sZ3WIbPTzpRCzEmK7CwBwUTngL4bUg9ENPjwqA3LQxG7VJkrnsnZKn xt0RBUYD1lfBhCcLxZKjC2ZgHLuHAt4vUJr1H5DKsmGeTn5JRvpe5L0ToxTyELkqAp Sn56SxFS78D4kUkuucIgSnMczGsI7gGFSoTdRlMLriaEdgrOjUM+mJRGPdxeaIA0Tj vOlq1yc3ZS1Ui4kNjjddg7ITTuKySXmzU4DEFo3QcBBEQ5nOQNfWTtaxf/p1lt8uTG SzmwrtkLZlpEA== 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(). 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_longterm_pages(). Reviewed-by: Ira Weiny Reviewed-by: Jens Axboe 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 f9a38998f2fc..0f307f2c7cac 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3433,9 +3433,8 @@ 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 2.24.0 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=-9.6 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 AC38CC43331 for ; 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Tue, 12 Nov 2019 00:07:20 +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; Tue, 12 Nov 2019 00:07:19 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Mon, 11 Nov 2019 16:07:18 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v3 14/23] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Mon, 11 Nov 2019 16:06:51 -0800 Message-ID: <20191112000700.3455038-15-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191112000700.3455038-1-jhubbard@nvidia.com> References: <20191112000700.3455038-1-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=1573517243; bh=JGzVxjkq7RUQ8oMNLIEnYl2kvvauj6PckGww94CdhYA=; 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Miller" , Mike Kravetz Errors-To: linuxppc-dev-bounces+linuxppc-dev=archiver.kernel.org@lists.ozlabs.org Sender: "Linuxppc-dev" 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_longterm_pages(). Reviewed-by: Ira Weiny Reviewed-by: Jens Axboe 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 f9a38998f2fc..0f307f2c7cac 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3433,9 +3433,8 @@ 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 2.24.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: John Hubbard Subject: [PATCH v3 14/23] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Mon, 11 Nov 2019 16:06:51 -0800 Message-ID: <20191112000700.3455038-15-jhubbard@nvidia.com> References: <20191112000700.3455038-1-jhubbard@nvidia.com> Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: <20191112000700.3455038-1-jhubbard@nvidia.com> Sender: linux-kernel-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 M 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_longterm_pages(). Reviewed-by: Ira Weiny Reviewed-by: Jens Axboe 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 f9a38998f2fc..0f307f2c7cac 100644 --- a/fs/io_uring.c +++ b/fs/io_uring.c @@ -3433,9 +3433,8 @@ 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 2.24.0 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 192AEC43331 for ; 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Mon, 11 Nov 2019 16:07:23 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Mon, 11 Nov 2019 16:07:20 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Mon, 11 Nov 2019 16:07:20 -0800 Received: from HQMAIL109.nvidia.com (172.20.187.15) by HQMAIL101.nvidia.com (172.20.187.10) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Tue, 12 Nov 2019 00:07:20 +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; Tue, 12 Nov 2019 00:07:19 +0000 Received: from blueforge.nvidia.com (Not Verified[10.110.48.28]) by rnnvemgw01.nvidia.com with Trustwave SEG (v7, 5, 8, 10121) id ; Mon, 11 Nov 2019 16:07:18 -0800 From: John Hubbard To: Andrew Morton Subject: [PATCH v3 14/23] fs/io_uring: set FOLL_PIN via pin_user_pages() Date: Mon, 11 Nov 2019 16:06:51 -0800 Message-ID: <20191112000700.3455038-15-jhubbard@nvidia.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191112000700.3455038-1-jhubbard@nvidia.com> References: <20191112000700.3455038-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Original-DKIM-Signature: v=1; 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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: <20191112000651.2qqCZlpLL1HPwjZ71448dOfxUqvzBdc7nAVmUC0OeAc@z> Q29udmVydCBmcy9pb191cmluZyB0byB1c2UgdGhlIG5ldyBwaW5fdXNlcl9wYWdlcygpIGNhbGws IHdoaWNoIHNldHMKRk9MTF9QSU4uIFNldHRpbmcgRk9MTF9QSU4gaXMgbm93IHJlcXVpcmVkIGZv ciBjb2RlIHRoYXQgcmVxdWlyZXMKdHJhY2tpbmcgb2YgcGlubmVkIHBhZ2VzLCBhbmQgdGhlcmVm b3JlIGZvciBhbnkgY29kZSB0aGF0IGNhbGxzCnB1dF91c2VyX3BhZ2UoKS4KCkluIHBhcnRpYWwg YW50aWNpcGF0aW9uIG9mIHRoaXMgd29yaywgdGhlIGlvX3VyaW5nIGNvZGUgd2FzIGFscmVhZHkK Y2FsbGluZyBwdXRfdXNlcl9wYWdlKCkgaW5zdGVhZCBvZiBwdXRfcGFnZSgpLiBUaGVyZWZvcmUs IGluIG9yZGVyIHRvCmNvbnZlcnQgZnJvbSB0aGUgZ2V0X3VzZXJfcGFnZXMoKS9wdXRfcGFnZSgp IG1vZGVsLCB0byB0aGUKcGluX3VzZXJfcGFnZXMoKS9wdXRfdXNlcl9wYWdlKCkgbW9kZWwsIHRo ZSBvbmx5IGNoYW5nZSByZXF1aXJlZApoZXJlIGlzIHRvIGNoYW5nZSBnZXRfdXNlcl9wYWdlcygp IHRvIHBpbl9sb25ndGVybV9wYWdlcygpLgoKUmV2aWV3ZWQtYnk6IElyYSBXZWlueSA8aXJhLndl aW55QGludGVsLmNvbT4KUmV2aWV3ZWQtYnk6IEplbnMgQXhib2UgPGF4Ym9lQGtlcm5lbC5kaz4K U2lnbmVkLW9mZi1ieTogSm9obiBIdWJiYXJkIDxqaHViYmFyZEBudmlkaWEuY29tPgotLS0KIGZz L2lvX3VyaW5nLmMgfCA1ICsrLS0tCiAxIGZpbGUgY2hhbmdlZCwgMiBpbnNlcnRpb25zKCspLCAz IGRlbGV0aW9ucygtKQoKZGlmZiAtLWdpdCBhL2ZzL2lvX3VyaW5nLmMgYi9mcy9pb191cmluZy5j CmluZGV4IGY5YTM4OTk4ZjJmYy4uMGYzMDdmMmM3Y2FjIDEwMDY0NAotLS0gYS9mcy9pb191cmlu Zy5jCisrKyBiL2ZzL2lvX3VyaW5nLmMKQEAgLTM0MzMsOSArMzQzMyw4IEBAIHN0YXRpYyBpbnQg aW9fc3FlX2J1ZmZlcl9yZWdpc3RlcihzdHJ1Y3QgaW9fcmluZ19jdHggKmN0eCwgdm9pZCBfX3Vz ZXIgKmFyZywKIAogCQlyZXQgPSAwOwogCQlkb3duX3JlYWQoJmN1cnJlbnQtPm1tLT5tbWFwX3Nl bSk7Ci0JCXByZXQgPSBnZXRfdXNlcl9wYWdlcyh1YnVmLCBucl9wYWdlcywKLQkJCQkgICAgICBG T0xMX1dSSVRFIHwgRk9MTF9MT05HVEVSTSwKLQkJCQkgICAgICBwYWdlcywgdm1hcyk7CisJCXBy ZXQgPSBwaW5fbG9uZ3Rlcm1fcGFnZXModWJ1ZiwgbnJfcGFnZXMsIEZPTExfV1JJVEUsIHBhZ2Vz LAorCQkJCQkgIHZtYXMpOwogCQlpZiAocHJldCA9PSBucl9wYWdlcykgewogCQkJLyogZG9uJ3Qg c3VwcG9ydCBmaWxlIGJhY2tlZCBtZW1vcnkgKi8KIAkJCWZvciAoaiA9IDA7IGogPCBucl9wYWdl czsgaisrKSB7Ci0tIAoyLjI0LjAKCl9fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fCmRyaS1kZXZlbCBtYWlsaW5nIGxpc3QKZHJpLWRldmVsQGxpc3RzLmZyZWVk ZXNrdG9wLm9yZwpodHRwczovL2xpc3RzLmZyZWVkZXNrdG9wLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2RyaS1kZXZlbA==