IO_BLOCK_SZ
my_ioblock_sz = IO_BLOCK_SZ;
42, "ecpp", 0, IO_BLOCK_SZ, ECPPHIWAT, ECPPLOWAT
pp->ioblock = (caddr_t)kmem_alloc(IO_BLOCK_SZ, KM_SLEEP);
kmem_free(pp->ioblock, IO_BLOCK_SZ);
kmem_free(pp->ioblock, IO_BLOCK_SZ);