/*
   * 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(unsigned long addr, unsigned long size)
  {
  	unsigned long limit = current_thread_info()->addr_limit.seg;
  	return !((addr < limit && size <= limit - addr) ||
  		 is_arch_mappable_range(addr, size));
  }
  EXPORT_SYMBOL(__range_ok);