[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/kernel/mutex-debug.c b/kernel/mutex-debug.c
index 6f82905..f4913c3 100644
--- a/kernel/mutex-debug.c
+++ b/kernel/mutex-debug.c
@@ -333,9 +333,10 @@
* is destroyed or reinitialized - this code checks whether there is
* any held lock in the memory range of <from> to <to>:
*/
-void mutex_debug_check_no_locks_freed(const void *from, const void *to)
+void mutex_debug_check_no_locks_freed(const void *from, unsigned long len)
{
struct list_head *curr, *next;
+ const void *to = from + len;
unsigned long flags;
struct mutex *lock;
void *lock_addr;
@@ -437,7 +438,7 @@
/*
* Make sure we are not reinitializing a held lock:
*/
- mutex_debug_check_no_locks_freed((void *)lock, (void *)(lock + 1));
+ mutex_debug_check_no_locks_freed((void *)lock, sizeof(*lock));
lock->owner = NULL;
INIT_LIST_HEAD(&lock->held_list);
lock->name = name;
