[XFS] mutex fallout - fix debug builds and remove no-longer-useful comment.

#ifndef __XFS_SUPPORT_MUTEX_H__

#define __XFS_SUPPORT_MUTEX_H__

#include <linux/spinlock.h>

#include <linux/mutex.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		0x0

typedef struct mutex mutex_t;

//#define mutex_destroy(lock)			do{}while(0)

#endif /* __XFS_SUPPORT_MUTEX_H__ */

	xqm->qm_dqfree_ratio = XFS_QM_DQFREE_RATIO;

	xqm->qm_nrefs = 0;

#ifdef DEBUG

	xfs_mutex_init(&qcheck_lock, MUTEX_DEFAULT, "qchk");

	mutex_init(&qcheck_lock);

#endif

	return xqm;

}