/* * Copyright 2010 Tilera Corporation. All Rights Reserved. * * This program is free software; you can redistribute it and/or * modify it under the terms of the GNU General Public License * as published by the Free Software Foundation, version 2. * * This program is distributed in the hope that it will be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or * NON INFRINGEMENT. See the GNU General Public License for * more details. */#include <linux/uaccess.h>#include <linux/module.h>int__range_ok(unsignedlongaddr,unsignedlongsize){unsignedlonglimit=current_thread_info()->addr_limit.seg;return!((addr<limit&&size<=limit-addr)||is_arch_mappable_range(addr,size));}EXPORT_SYMBOL(__range_ok);