From patchwork Fri Aug 2 02:16:21 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: john.hubbard@gmail.com X-Patchwork-Id: 11072633 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 2E45D13B1 for ; Fri, 2 Aug 2019 04:16:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 1E8A628768 for ; Fri, 2 Aug 2019 04:16:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 118AD287CD; Fri, 2 Aug 2019 04:16:10 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.0 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, DKIM_INVALID,DKIM_SIGNED,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 960FD28768 for ; Fri, 2 Aug 2019 04:16:09 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1htOxU-0005q5-EW; Fri, 02 Aug 2019 04:14:24 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1htN7u-0006PD-W3 for xen-devel@lists.xenproject.org; Fri, 02 Aug 2019 02:17:03 +0000 X-Inumbo-ID: 9d0f0628-b4cb-11e9-8980-bc764e045a96 Received: from mail-pf1-x441.google.com (unknown [2607:f8b0:4864:20::441]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTPS id 9d0f0628-b4cb-11e9-8980-bc764e045a96; Fri, 02 Aug 2019 02:17:02 +0000 (UTC) Received: by mail-pf1-x441.google.com with SMTP id m30so35159969pff.8 for ; Thu, 01 Aug 2019 19:17:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=qSYlns3rxzw4u/DyjG2ivKH4pSlvpz3tTvNpv+Vzl0A=; b=ri/g8fH5EMbaRGeRCBUMa0gqvf5sZKxxRTcoGNlKvndtobuEMarAmuyiWR0Or0yt3d ZgeLr0P+kW4cqW28KQH/rOYsII5pR9Pk0M0WFYUApB7SKz6vEgjXY+F34hxONagLYY9L Py6Blyj3NR1ZdTatlTm5llaJcajjxdcYrAkl23WVqTVg9XAD+0Qg+cC1rauwop+vVeNx bVVFBfM1nAEvoH8ncIKlerRWnqRBlhjzlfCDLJ981KoDXyQRyzFGpLUw/iRcSWFkJ5xl t+5zV5laKnX+3Bq/BiZ3lREDjIqp5Q8qRulPXvOqGHi7pfUVWIrfUbywjbnDPsqYnoHP +z/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=qSYlns3rxzw4u/DyjG2ivKH4pSlvpz3tTvNpv+Vzl0A=; b=dGY+4apQANzg01TB6L09sZhBt7t0bb1xH8+reD4vvP67/zYxUYN/qDfIQUTEkivEC6 F5d5PIXoiQdVD9Acb/BDRo30s74RshFa4zss8bBPnMbfXsFB6wIskIaBZEBDglXs7BYs 5DTQimdSrlU1PhJMdiyI0UHVYSKRYKbdehfQORT1ERqNp/EI6e0IXcWKptbmwC5SEKkm Po+5yBd20qU78THfVHVsCiPEMyDIaixJ1Ue2If7UvtxRcD2pF61h9I2xPaBk/nD/pQni 7T1KFEHTTW6ZTW5NS9kdH9wwRFuDMbhKxURhK1jtEhyxB7tZy/xC75Guwj468Cg5V48Z 92xg== X-Gm-Message-State: APjAAAXH+KJGj5DYDxQ3NdUtvC9nSyHAnmwZ0RHJIf9nJibh0aGZxtf1 rUarIhfUdMexuMcU8WwVNM8= X-Google-Smtp-Source: APXvYqzbu0fqyx1S9wHk9TZWdOKFNLR8W4aJ20JQpVBVWnaUPwqEe+RFqTrVv58Rvjaf0s5gNM1HPA== X-Received: by 2002:a17:90a:ba93:: with SMTP id t19mr1809345pjr.139.1564712221494; Thu, 01 Aug 2019 19:17:01 -0700 (PDT) Received: from blueforge.nvidia.com (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id p187sm118200292pfg.89.2019.08.01.19.16.59 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 01 Aug 2019 19:17:00 -0700 (PDT) From: john.hubbard@gmail.com X-Google-Original-From: jhubbard@nvidia.com To: Andrew Morton Date: Thu, 1 Aug 2019 19:16:21 -0700 Message-Id: <20190802021653.4882-3-jhubbard@nvidia.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802021653.4882-1-jhubbard@nvidia.com> References: <20190802021653.4882-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Approved-At: Fri, 02 Aug 2019 04:14:22 +0000 Subject: [Xen-devel] [PATCH 02/34] net/rds: convert put_page() to put_user_page*() X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, Jan Kara , kvm@vger.kernel.org, Dave Hansen , Dave Chinner , dri-devel@lists.freedesktop.org, linux-mm@kvack.org, sparclinux@vger.kernel.org, Ira Weiny , ceph-devel@vger.kernel.org, devel@driverdev.osuosl.org, rds-devel@oss.oracle.com, linux-rdma@vger.kernel.org, x86@kernel.org, amd-gfx@lists.freedesktop.org, Christoph Hellwig , Jason Gunthorpe , xen-devel@lists.xenproject.org, devel@lists.orangefs.org, linux-media@vger.kernel.org, John Hubbard , intel-gfx@lists.freedesktop.org, Santosh Shilimkar , linux-block@vger.kernel.org, =?utf-8?b?SsOpcsO0bWUgR2xpc3Nl?= , linux-rpi-kernel@lists.infradead.org, Dan Williams , linux-arm-kernel@lists.infradead.org, linux-nfs@vger.kernel.org, netdev@vger.kernel.org, LKML , linux-xfs@vger.kernel.org, linux-crypto@vger.kernel.org, linux-fsdevel@vger.kernel.org, "David S . Miller" Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: John Hubbard For pages that were retained via get_user_pages*(), release those pages via the new put_user_page*() routines, instead of via put_page() or release_pages(). This is part a tree-wide conversion, as described in commit fc1d8e7cca2d ("mm: introduce put_user_page*(), placeholder versions"). Cc: Santosh Shilimkar Cc: David S. Miller Cc: netdev@vger.kernel.org Cc: linux-rdma@vger.kernel.org Cc: rds-devel@oss.oracle.com Signed-off-by: John Hubbard --- net/rds/info.c | 5 ++--- net/rds/message.c | 2 +- net/rds/rdma.c | 15 +++++++-------- 3 files changed, 10 insertions(+), 12 deletions(-) diff --git a/net/rds/info.c b/net/rds/info.c index 03f6fd56d237..ca6af2889adf 100644 --- a/net/rds/info.c +++ b/net/rds/info.c @@ -162,7 +162,6 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval, struct rds_info_lengths lens; unsigned long nr_pages = 0; unsigned long start; - unsigned long i; rds_info_func func; struct page **pages = NULL; int ret; @@ -235,8 +234,8 @@ int rds_info_getsockopt(struct socket *sock, int optname, char __user *optval, ret = -EFAULT; out: - for (i = 0; pages && i < nr_pages; i++) - put_page(pages[i]); + if (pages) + put_user_pages(pages, nr_pages); kfree(pages); return ret; diff --git a/net/rds/message.c b/net/rds/message.c index 50f13f1d4ae0..d7b0d266c437 100644 --- a/net/rds/message.c +++ b/net/rds/message.c @@ -404,7 +404,7 @@ static int rds_message_zcopy_from_user(struct rds_message *rm, struct iov_iter * int i; for (i = 0; i < rm->data.op_nents; i++) - put_page(sg_page(&rm->data.op_sg[i])); + put_user_page(sg_page(&rm->data.op_sg[i])); mmp = &rm->data.op_mmp_znotifier->z_mmp; mm_unaccount_pinned_pages(mmp); ret = -EFAULT; diff --git a/net/rds/rdma.c b/net/rds/rdma.c index 916f5ec373d8..6762e8696b99 100644 --- a/net/rds/rdma.c +++ b/net/rds/rdma.c @@ -162,8 +162,7 @@ static int rds_pin_pages(unsigned long user_addr, unsigned int nr_pages, pages); if (ret >= 0 && ret < nr_pages) { - while (ret--) - put_page(pages[ret]); + put_user_pages(pages, ret); ret = -EFAULT; } @@ -276,7 +275,7 @@ static int __rds_rdma_map(struct rds_sock *rs, struct rds_get_mr_args *args, if (IS_ERR(trans_private)) { for (i = 0 ; i < nents; i++) - put_page(sg_page(&sg[i])); + put_user_page(sg_page(&sg[i])); kfree(sg); ret = PTR_ERR(trans_private); goto out; @@ -464,9 +463,10 @@ void rds_rdma_free_op(struct rm_rdma_op *ro) * to local memory */ if (!ro->op_write) { WARN_ON(!page->mapping && irqs_disabled()); - set_page_dirty(page); + put_user_pages_dirty_lock(&page, 1, true); + } else { + put_user_page(page); } - put_page(page); } kfree(ro->op_notifier); @@ -481,8 +481,7 @@ void rds_atomic_free_op(struct rm_atomic_op *ao) /* Mark page dirty if it was possibly modified, which * is the case for a RDMA_READ which copies from remote * to local memory */ - set_page_dirty(page); - put_page(page); + put_user_pages_dirty_lock(&page, 1, true); kfree(ao->op_notifier); ao->op_notifier = NULL; @@ -867,7 +866,7 @@ int rds_cmsg_atomic(struct rds_sock *rs, struct rds_message *rm, return ret; err: if (page) - put_page(page); + put_user_page(page); rm->atomic.op_active = 0; kfree(rm->atomic.op_notifier);