/* * Copyright (c) 2000-2002 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_SV_H__#define __XFS_SUPPORT_SV_H__#include <linux/wait.h>#include <linux/sched.h>#include <linux/spinlock.h>/* * Synchronisation variables. * * (Parameters "pri", "svf" and "rts" are not implemented) */typedef struct sv_s {	wait_queue_head_t waiters;} sv_t;#define SV_FIFO		0x0		/* sv_t is FIFO type */#define SV_LIFO		0x2		/* sv_t is LIFO type */#define SV_PRIO		0x4		/* sv_t is PRIO type */#define SV_KEYED	0x6		/* sv_t is KEYED type */#define SV_DEFAULT      SV_FIFOstatic inline void _sv_wait(sv_t *sv, spinlock_t *lock, int state,			     unsigned long timeout){	DECLARE_WAITQUEUE(wait, current);	add_wait_queue_exclusive(&sv->waiters, &wait);	__set_current_state(state);	spin_unlock(lock);	schedule_timeout(timeout);	remove_wait_queue(&sv->waiters, &wait);}#define init_sv(sv,type,name,flag) \	init_waitqueue_head(&(sv)->waiters)#define sv_init(sv,flag,name) \	init_waitqueue_head(&(sv)->waiters)#define sv_destroy(sv) \	/*NOTHING*/#define sv_wait(sv, pri, lock, s) \	_sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)#define sv_wait_sig(sv, pri, lock, s)   \	_sv_wait(sv, lock, TASK_INTERRUPTIBLE, MAX_SCHEDULE_TIMEOUT)#define sv_timedwait(sv, pri, lock, s, svf, ts, rts) \	_sv_wait(sv, lock, TASK_UNINTERRUPTIBLE, timespec_to_jiffies(ts))#define sv_timedwait_sig(sv, pri, lock, s, svf, ts, rts) \	_sv_wait(sv, lock, TASK_INTERRUPTIBLE, timespec_to_jiffies(ts))#define sv_signal(sv) \	wake_up(&(sv)->waiters)#define sv_broadcast(sv) \	wake_up_all(&(sv)->waiters)#endif /* __XFS_SUPPORT_SV_H__ */