extern void libxfs_bcache_flush(void);
extern void libxfs_purgebuf(xfs_buf_t *);
extern int libxfs_bcache_overflowed(void);
-extern int libxfs_bcache_usage(void);
/* Buffer (Raw) Interfaces */
extern xfs_buf_t *libxfs_getbufr(struct xfs_buftarg *, xfs_daddr_t, int);