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: 11072399 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 87DF9746 for ; Fri, 2 Aug 2019 02:26:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 757D2285FF for ; Fri, 2 Aug 2019 02:26:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 68823287BA; Fri, 2 Aug 2019 02:26:23 +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, DKIM_SIGNED,DKIM_VALID,FREEMAIL_FROM,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 11B7D285FF for ; Fri, 2 Aug 2019 02:26:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ke1IX6taOvex841mJwkKEpyAyFnJs/hcqXz8nYVmqnM=; b=LTBiKH9P0msKJz CHS0OKOtkGJew59zg0/iG0n2+ALdWFoT11JOBpLa1x3RgAQqrBWfg7jdWGcqFYsCLKlIL/rCVmPvu N66jWzJEXYo67PmP8ok4MbWToRs9j8Ovj0Q4NgsuLXtmBKEDBDRshKmgHz8Q72l9rqONKHJh2vAyu s35WsVVo/Vhwq9XWU7wCMDHfZZZhaleW8FWE15rdBway8Ri1J5ZiI8dtH8dlmx8XVwCXqRaTltTxP Shz1dfCtjL2aYhDrdU/6dwoSMmfW4cywY2WjsUonOHN3VGQ8bwElc9A68RWJRHHX3S9m4Tial9QcK zp8sxiYmfcr+38QbO+Cg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1htNGw-0000kC-5b; Fri, 02 Aug 2019 02:26:22 +0000 Received: from mail-pl1-x644.google.com ([2607:f8b0:4864:20::644]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1htNBS-00028T-Ca; Fri, 02 Aug 2019 02:20:44 +0000 Received: by mail-pl1-x644.google.com with SMTP id w24so33012075plp.2; Thu, 01 Aug 2019 19:20:42 -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=py067aGaFWqYQnWW3CrL2Yk9VWIyNl4WEpwUsrZ7LgI=; b=lOZaOBHnHG96U7CUpGeMR/TMYtjEa4y/ygakLmz0BtnL+pIOpa3C2toztsy8fW4gwW tSTtviLJ7HOi9DtUi5KI4XY0WPu2eSdUBZVMSVezuKPLNyCDQwUs6J0/BBBZ+6xhu24Z FFakCBm8lWNZ+G5ej5b+50tyKMtD+b21oulPMq7HB8nLNBdaEf18LO4IyZXO6FYAkAZH Gf/avj3rVBNxZL42D+4KJvp1yOXbbtpENzFq10jG7FxODtHOFfbvskOX/bZ+DtIk1XsS LtXAfdLjn1YTVqg0w1Z1LAlYkVjy6XQT7mshmHFnFkvQYLq3O8bZzk73cr7CrbSrM5zf ODTw== 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=FcPvHfQmBys8asfwnRxwp/rqNfaUvS+76nDd98kX6GnpyeDDLbvLKSVZVs5D2X5Axi f66iePKhkHDXfoqOC7HhRJeaZXuIqkehahXV0V5R4Ka59w2MuxG++xYvmW+ZffJLou45 lg87cjTBuLthXoIIfEtA+jQT7wKQF6awBkr4Sl8d/jw2tM9iMG+wz6ZkM92Hb1NbWxjk NJkDuEXj4+31+C4qF0DbGBxOA0kqhd6uB1GhFByu5v8DVyUKqrvJ1BWhnI4uc4iMOxOE JbWzcQsFBi1vyhCIqqOU6t992mcAYmDA4A5OCjEkt5hlPc+1fpxdSh/A7C8H5T4k2n1n ynEA== X-Gm-Message-State: APjAAAXML6vm4BsFc2OyCBNZslhp6PkpJdKTRE/d+gqvxPxUVSZZvRSr 89Mo/RsJCFBxOFIWrSJIWr8= 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-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190801_192043_094813_69C7F6E0 X-CRM114-Status: GOOD ( 11.33 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: 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, Rob Herring , 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 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org 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);