FDMICROROOTSIZE
addr = kmem_alloc(FDMICROROOTSIZE, KM_SLEEP);
if (offset + DEV_BSIZE > FDMICROROOTSIZE)
addr = kmem_alloc(FDMICROROOTSIZE, KM_SLEEP);
if (offset + DEV_BSIZE > FDMICROROOTSIZE)
addr = kmem_alloc(FDMICROROOTSIZE, KM_SLEEP);
if (offset + DEV_BSIZE > FDMICROROOTSIZE)