ffs_setblock     1731 ufs/ffs/ffs_alloc.c 		ffs_setblock(fs, cg_blksfree(cgp), blkno);
ffs_setblock      133 ufs/ffs/ffs_extern.h void ffs_setblock(struct fs *, unsigned char *, daddr_t);
ffs_setblock       87 ufs/ffs/ffs_subr.c void	ffs_setblock(struct fs *, unsigned char *, daddr_t);