cgimin
wtfs(fsbtodb(&sblock, cgimin(&sblock, cg) + i),
bread(fsbtodb(sblock, cgimin(sblock, iblk)), itab,
wtfs(fsbtodb(&sblock, cgimin(&sblock, cg) + i),
((daddr_t)(cgimin(fs, ino_to_cg(fs, x)) + \
ffs_wtfs(fsbtodb(&sblock, cgimin(&sblock, cylno) + i),