···18#ifndef __XFS_SUPPORT_MUTEX_H__19#define __XFS_SUPPORT_MUTEX_H__2021-#include <linux/spinlock.h>22#include <linux/mutex.h>2324-/*25- * Map the mutex'es from IRIX to Linux semaphores.26- *27- * Destroy just simply initializes to -99 which should block all other28- * callers.29- */30-#define MUTEX_DEFAULT 0x031-32-typedef struct mutex mutex_t;33-//#define mutex_destroy(lock) do{}while(0)3435#endif /* __XFS_SUPPORT_MUTEX_H__ */