[PATCH] fix/simplify mutex debugging code

Let's switch mutex_debug_check_no_locks_freed() to take (addr, len) as
arguments instead, since all its callers were just calculating the 'to'
address for themselves anyway... (and sometimes doing so badly).

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/arch/i386/mm/pageattr.c b/arch/i386/mm/pageattr.c
index e8a5355..d0cadb3 100644
--- a/arch/i386/mm/pageattr.c
+++ b/arch/i386/mm/pageattr.c
@@ -224,7 +224,7 @@
 		return;
 	if (!enable)
 		mutex_debug_check_no_locks_freed(page_address(page),
-						 page_address(page+numpages));
+						 numpages * PAGE_SIZE);
 
 	/* the return value is ignored - the calls cannot fail,
 	 * large pages are disabled at boot time.