[XFS] Cleanup lock goop.

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

#include <linux/spinlock.h>

/*

 * Map lock_t from IRIX to Linux spinlocks.

 *

 * We do not make use of lock_t from interrupt context, so we do not

 * have to worry about disabling interrupts at all (unlike IRIX).

 */

typedef spinlock_t lock_t;

#define SPLDECL(s)			unsigned long s

#ifndef DEFINE_SPINLOCK

#define DEFINE_SPINLOCK(s)		spinlock_t s = SPIN_LOCK_UNLOCKED

#endif

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

#define	spinlock_destroy(lock)

#define mutex_spinlock(lock)		({ spin_lock(lock); 0; })

#define mutex_spinunlock(lock, s)	do { spin_unlock(lock); (void)s; } while (0)

#define nested_spinlock(lock)		spin_lock(lock)

#define nested_spinunlock(lock)		spin_unlock(lock)

#endif /* __XFS_SUPPORT_SPIN_H__ */

	xfs_daddr_t		icl_blkno;	/* starting block number of

						 * the cluster */

	struct xfs_buf		*icl_buf;	/* the inode buffer */

	lock_t			icl_lock;	/* inode list lock */

	spinlock_t		icl_lock;	/* inode list lock */

} xfs_icluster_t;

/*

	int			m_bsize;	/* fs logical block size */

	xfs_agnumber_t		m_agfrotor;	/* last ag where space found */

	xfs_agnumber_t		m_agirotor;	/* last ag dir inode alloced */

	lock_t			m_agirotor_lock;/* .. and lock protecting it */

	spinlock_t		m_agirotor_lock;/* .. and lock protecting it */

	xfs_agnumber_t		m_maxagi;	/* highest inode alloc group */

	struct xfs_inode	*m_inodes;	/* active inode list */

	struct list_head	m_del_inodes;	/* inodes to reclaim */