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Subject[patch 3/3] mutex subsystem: inline mutex_is_locked()

There is currently no advantage to not always inlining mutex_is_locked,
even on x86.

Signed-off-by: Nicolas Pitre <nico@cam.org>

Index: linux-2.6/kernel/mutex.c
===================================================================
--- linux-2.6.orig/kernel/mutex.c
+++ linux-2.6/kernel/mutex.c
@@ -22,19 +22,6 @@
# include "mutex.h"
#endif

-/***
- * mutex_is_locked - is the mutex locked
- * @lock: the mutex to be queried
- *
- * Returns 1 if the mutex is locked, 0 if unlocked.
- */
-int fastcall mutex_is_locked(struct mutex *lock)
-{
- return atomic_read(&lock->count) != 1;
-}
-
-EXPORT_SYMBOL(mutex_is_locked);
-
/*
* Block on a lock - add ourselves to the list of waiters.
* Called with lock->wait_lock held.
Index: linux-2.6/include/linux/mutex.h
===================================================================
--- linux-2.6.orig/include/linux/mutex.h
+++ linux-2.6/include/linux/mutex.h
@@ -139,6 +139,9 @@ extern int FASTCALL(mutex_trylock(struct
extern void FASTCALL(mutex_unlock(struct mutex *lock));
#endif

-extern int FASTCALL(mutex_is_locked(struct mutex *lock));
+static inline int fastcall mutex_is_locked(struct mutex *lock)
+{
+ return atomic_read(&lock->count) != 1;
+}

#endif
-
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