Received-SPF: pass (google.com: best guess record for domain of linux-crypto-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67;
From:   john.hubbard@gmail.com
To:     Andrew Morton <akpm@linux-foundation.org>
Cc:     Christoph Hellwig <hch@infradead.org>,
        Dan Williams <dan.j.williams@intel.com>,
        Dave Chinner <david@fromorbit.com>,
        Dave Hansen <dave.hansen@linux.intel.com>,
        Ira Weiny <ira.weiny@intel.com>, Jan Kara <jack@suse.cz>,
        Jason Gunthorpe <jgg@ziepe.ca>,
        =?UTF-8?q?J=C3=A9r=C3=B4me=20Glisse?= <jglisse@redhat.com>,
        LKML <linux-kernel@vger.kernel.org>,
        amd-gfx@lists.freedesktop.org, ceph-devel@vger.kernel.org,
        devel@driverdev.osuosl.org, devel@lists.orangefs.org,
        dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org,
        kvm@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-block@vger.kernel.org, linux-crypto@vger.kernel.org,
        linux-fbdev@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-media@vger.kernel.org, linux-mm@kvack.org,
        linux-nfs@vger.kernel.org, linux-rdma@vger.kernel.org,
        linux-rpi-kernel@lists.infradead.org, linux-xfs@vger.kernel.org,
        netdev@vger.kernel.org, rds-devel@oss.oracle.com,
        sparclinux@vger.kernel.org, x86@kernel.org,
        xen-devel@lists.xenproject.org, John Hubbard <jhubbard@nvidia.com>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        Eric Anholt <eric@anholt.net>,
        Stefan Wahren <stefan.wahren@i2se.com>,
        Mihaela Muraru <mihaela.muraru21@gmail.com>,
        Suniel Mahesh <sunil.m@techveda.org>,
        Al Viro <viro@zeniv.linux.org.uk>,
        Sidong Yang <realwakka@gmail.com>,
        Kishore KP <kishore.p@techveda.org>
Subject: [PATCH v2 15/34] staging/vc04_services: convert put_page() to put_user_page*()
Date:   Sun,  4 Aug 2019 15:48:56 -0700
Message-Id: <20190804224915.28669-16-jhubbard@nvidia.com>
In-Reply-To: <20190804224915.28669-1-jhubbard@nvidia.com>
References: <20190804224915.28669-1-jhubbard@nvidia.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Sender: linux-crypto-owner@vger.kernel.org
Precedence: bulk

From: John Hubbard <jhubbard@nvidia.com>

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").

Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Cc: Eric Anholt <eric@anholt.net>
Cc: Stefan Wahren <stefan.wahren@i2se.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Mihaela Muraru <mihaela.muraru21@gmail.com>
Cc: Suniel Mahesh <sunil.m@techveda.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Sidong Yang <realwakka@gmail.com>
Cc: Kishore KP <kishore.p@techveda.org>
Cc: linux-rpi-kernel@lists.infradead.org
Cc: linux-arm-kernel@lists.infradead.org
Cc: devel@driverdev.osuosl.org
Signed-off-by: John Hubbard <jhubbard@nvidia.com>
---
 .../vc04_services/interface/vchiq_arm/vchiq_2835_arm.c | 10 ++--------
 1 file changed, 2 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
index 61c69f353cdb..ec92b4c50e95 100644
--- a/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
+++ b/drivers/staging/vc04_services/interface/vchiq_arm/vchiq_2835_arm.c
@@ -336,10 +336,7 @@ cleanup_pagelistinfo(struct vchiq_pagelist_info *pagelistinfo)
 	}
 
 	if (pagelistinfo->pages_need_release) {
-		unsigned int i;
-
-		for (i = 0; i < pagelistinfo->num_pages; i++)
-			put_page(pagelistinfo->pages[i]);
+		put_user_pages(pagelistinfo->pages, pagelistinfo->num_pages);
 	}
 
 	dma_free_coherent(g_dev, pagelistinfo->pagelist_buffer_size,
@@ -454,10 +451,7 @@ create_pagelist(char __user *buf, size_t count, unsigned short type)
 				       __func__, actual_pages, num_pages);
 
 			/* This is probably due to the process being killed */
-			while (actual_pages > 0) {
-				actual_pages--;
-				put_page(pages[actual_pages]);
-			}
+			put_user_pages(pages, actual_pages);
 			cleanup_pagelistinfo(pagelistinfo);
 			return NULL;
 		}
-- 
2.22.0