MNINDIR
bn < MNINDIR(ump) && *runp < maxrun &&
blockcnt *= MNINDIR(ump);
} while (daddr == 0 && ++off < MNINDIR(ump));
qblockcnt = (int64_t)blockcnt * MNINDIR(ump);
off = (bn / blockcnt) % MNINDIR(ump);
blockcnt /= MNINDIR(ump);
bn < MNINDIR(ump) && *runp < maxrun &&
bn < MNINDIR(ump) && *runp < maxrun &&
blockcnt *= MNINDIR(ump);
} while (daddr == 0 && ++off < MNINDIR(ump));
blockcnt *= MNINDIR(ump);
blockcnt /= MNINDIR(ump);
off = (bn / blockcnt) % MNINDIR(ump);