/* * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 of the GNU General Public License as * published by the Free Software Foundation. * * This program is distributed in the hope that it would be useful, but * WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like.  Any license provided herein, whether implied or * otherwise, applies only to this software file.  Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA  94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */#ifndef __XFS_SUPPORT_MUTEX_H__#define __XFS_SUPPORT_MUTEX_H__#include <linux/spinlock.h>#include <asm/semaphore.h>/* * Map the mutex'es from IRIX to Linux semaphores. * * Destroy just simply initializes to -99 which should block all other * callers. */#define MUTEX_DEFAULT		0x0typedef struct semaphore	mutex_t;#define mutex_init(lock, type, name)		sema_init(lock, 1)#define mutex_destroy(lock)			sema_init(lock, -99)#define mutex_lock(lock, num)			down(lock)#define mutex_trylock(lock)			(down_trylock(lock) ? 0 : 1)#define mutex_unlock(lock)			up(lock)#endif /* __XFS_SUPPORT_MUTEX_H__ */