25 lines
852 B
C
25 lines
852 B
C
|
/*
|
||
|
|
* 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);
|