IINFOSIZE
((IINFO *)((char *)buf + lfs_sb_getsumsize(fs) - IINFOSIZE(fs)))
((IINFO *)((char *)(iip) - IINFOSIZE(fs)))
((IINFO *)((char *)SEGSUM_IINFOSTART(fs, buf) - (n)*IINFOSIZE(fs)))
sp->sum_bytes_left < IINFOSIZE(fs))) {
sp->sum_bytes_left < IINFOSIZE(fs))
sp->sum_bytes_left -= IINFOSIZE(fs);