cg_clustersumoff  392 ufs/ffs/fs.h   	int32_t	 cg_clustersumoff;	/* (u_int32) counts of avail clusters */
cg_clustersumoff  428 ufs/ffs/fs.h       ((int32_t *)((u_int8_t *)(cgp) + (cgp)->cg_clustersumoff))