diff -purN v2.6.12-rc2/include/linux/mutex.h v2.6.12-rc2-00_mutex/include/linux/mutex.h
--- v2.6.12-rc2/include/linux/mutex.h	1969-12-31 19:00:00.000000000 -0500
+++ v2.6.12-rc2-00_mutex/include/linux/mutex.h	2005-04-07 15:38:22.000000000 -0400
@@ -0,0 +1,40 @@
+#ifndef _LINUX_MUTEX_H
+#define _LINUX_MUTEX_H
+
+#include <asm/semaphore.h>
+
+struct mutex {
+	struct semaphore sem;
+};
+
+static inline void mutex_lock(struct mutex *mut)
+{
+	down(&mut->sem);
+}
+
+static inline int mutex_lock_interruptible(struct mutex *mut)
+{
+	return down_interruptible(&mut->sem);
+}
+
+static inline void mutex_unlock(struct mutex *mut)
+{
+	up(&mut->sem);
+}
+
+static inline int mutex_trylock(struct mutex *mut)
+{
+	return down_trylock(&mut->sem);
+}
+
+static inline void mutex_init(struct mutex *mut)
+{
+        sema_init(&mut->sem, 1);
+}
+
+static inline void mutex_init_LOCKED(struct mutex *mut)
+{
+        sema_init(&mut->sem, 0);
+}
+
+#endif /* _LINUX_MUTEX_H */