From patchwork Fri Aug 2 02:19:50 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: 11072941 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 46D45174A for ; Fri, 2 Aug 2019 08:20:52 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 34857285B5 for ; Fri, 2 Aug 2019 08:20:52 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 279A5286E2; Fri, 2 Aug 2019 08:20:52 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_ADSP_CUSTOM_MED, FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id CE1F4285FF for ; Fri, 2 Aug 2019 08:20:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 14B796ED12; Fri, 2 Aug 2019 08:19:33 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-pl1-x643.google.com (mail-pl1-x643.google.com [IPv6:2607:f8b0:4864:20::643]) by gabe.freedesktop.org (Postfix) with ESMTPS id 48E2C6E860; Fri, 2 Aug 2019 02:20:42 +0000 (UTC) Received: by mail-pl1-x643.google.com with SMTP id 4so26013766pld.10; Thu, 01 Aug 2019 19:20:42 -0700 (PDT) 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=py067aGaFWqYQnWW3CrL2Yk9VWIyNl4WEpwUsrZ7LgI=; b=qBKfdLvt4zpwF3bFfDGDhoaIgsDirF1d8cf+bsNbu5GSvo2wdZj1jiJyQkM3xqef+H y/+UoeX9B4d6yZY1GaidLVxDyZy/P+XGR+Co1+PvjfCcxpxkLOtknMQVJTF5/1hkQwEN ECoVQw93VRTecHE9o3l1vMSk8/KJ8p8lYWzCgSfY7PNAqGApa0X5VAdo5Fqenh1+qatB Y8Qvvf/I+/yXQZlG1R0G4C1ribhFSMgoBKq8OOJCz69XHigknjpDsPhFFEG09Aadg47V GvdWubMaWPxf2KCdA+43aOxAXZiNm7Ci5MbPh3qbtd+LTMV7RHaK/NQwSx8se+xn4ALq P0oQ== X-Gm-Message-State: APjAAAUpM797Q2xxrVqksrVD9tisv5AwIycLJFkoGnlAOzR7KTrdenZS Iifc2mFY1w6Uzdqd8Wh1tdg= X-Google-Smtp-Source: APXvYqxy0BkUtbl8ULTboF2upH0nHFnxM+Cu1b4hTcaSsJxULdUpLCIdwe/mZoVo5hGjgo4EZJg93Q== X-Received: by 2002:a17:902:f46:: with SMTP id 64mr130019975ply.235.1564712441986; Thu, 01 Aug 2019 19:20:41 -0700 (PDT) Received: from blueforge.nvidia.com (searspoint.nvidia.com. [216.228.112.21]) by smtp.gmail.com with ESMTPSA id u9sm38179744pgc.5.2019.08.01.19.20.40 (version=TLS1_3 cipher=AEAD-AES256-GCM-SHA384 bits=256/256); Thu, 01 Aug 2019 19:20:41 -0700 (PDT) From: john.hubbard@gmail.com X-Google-Original-From: jhubbard@nvidia.com To: Andrew Morton Subject: [PATCH 19/34] fsl_hypervisor: convert put_page() to put_user_page*() Date: Thu, 1 Aug 2019 19:19:50 -0700 Message-Id: <20190802022005.5117-20-jhubbard@nvidia.com> X-Mailer: git-send-email 2.22.0 In-Reply-To: <20190802022005.5117-1-jhubbard@nvidia.com> References: <20190802022005.5117-1-jhubbard@nvidia.com> MIME-Version: 1.0 X-NVConfidentiality: public X-Mailman-Approved-At: Fri, 02 Aug 2019 08:19:03 +0000 X-Mailman-Original-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=py067aGaFWqYQnWW3CrL2Yk9VWIyNl4WEpwUsrZ7LgI=; b=lOZaOBHnHG96U7CUpGeMR/TMYtjEa4y/ygakLmz0BtnL+pIOpa3C2toztsy8fW4gwW tSTtviLJ7HOi9DtUi5KI4XY0WPu2eSdUBZVMSVezuKPLNyCDQwUs6J0/BBBZ+6xhu24Z FFakCBm8lWNZ+G5ej5b+50tyKMtD+b21oulPMq7HB8nLNBdaEf18LO4IyZXO6FYAkAZH Gf/avj3rVBNxZL42D+4KJvp1yOXbbtpENzFq10jG7FxODtHOFfbvskOX/bZ+DtIk1XsS LtXAfdLjn1YTVqg0w1Z1LAlYkVjy6XQT7mshmHFnFkvQYLq3O8bZzk73cr7CrbSrM5zf ODTw== 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: 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, Kees Cook , John Hubbard , intel-gfx@lists.freedesktop.org, 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, Al Viro Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-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"). This changes the release code slightly, because each page slot in the page_list[] array is no longer checked for NULL. However, that check was wrong anyway, because the get_user_pages() pattern of usage here never allowed for NULL entries within a range of pinned pages. Cc: Al Viro Cc: Kees Cook Cc: Rob Herring Signed-off-by: John Hubbard --- drivers/virt/fsl_hypervisor.c | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-) diff --git a/drivers/virt/fsl_hypervisor.c b/drivers/virt/fsl_hypervisor.c index 93d5bebf9572..a8f78d572c45 100644 --- a/drivers/virt/fsl_hypervisor.c +++ b/drivers/virt/fsl_hypervisor.c @@ -292,11 +292,8 @@ static long ioctl_memcpy(struct fsl_hv_ioctl_memcpy __user *p) virt_to_phys(sg_list), num_pages); exit: - if (pages) { - for (i = 0; i < num_pages; i++) - if (pages[i]) - put_page(pages[i]); - } + if (pages) + put_user_pages(pages, num_pages); kfree(sg_list_unaligned); kfree(pages);