xfs_agnumber_t
agb2daddr (xfs_agnumber_t agno, xfs_agblock_t agbno)
return agb2daddr ((xfs_agnumber_t)(fsbno >> xfs.agblklog),
xfs_agnumber_t agno;
static inline xfs_agnumber_t
xfs_agnumber_t sb_agcount; /* number of allocation groups */