MAX_DAT_FILE_SIZE
buf1 = (char *)kmem_alloc(MAX_DAT_FILE_SIZE, KM_SLEEP);
count = kobj_read_file(file, buf1, MAX_DAT_FILE_SIZE-1, 0);
if (count >= MAX_DAT_FILE_SIZE) {
kmem_free(buf1, MAX_DAT_FILE_SIZE);