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Cleanup lock goop.

Switch last couple lock_t's to spinlock_t's.
Remove now-unused spinlock-related macros & types.

Signed-off-by: Eric Sandeen <sandeen@sandeen.net>
Merge of xfs-linux-melb:xfs-kern:29748a by kenmcd.

  Cleanup lock goop

/*
 * Copyright (c) 2000-2002,2005 Silicon Graphics, Inc.
 * All Rights Reserved.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms 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.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write the Free Software Foundation,
 * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */
#ifndef __XFS_SUPPORT_SPIN_H__
#define __XFS_SUPPORT_SPIN_H__

#include <linux/sched.h>	/* preempt needs this */
#include <linux/spinlock.h>

#define spinlock_init(lock, name)	spin_lock_init(lock)
#define	spinlock_destroy(lock)

#endif /* __XFS_SUPPORT_SPIN_H__ */