/*
* The length of the ID shouldn't be assumed by software since
* it may change in the future. The allocation size is limited
- * to 1 << (PAGE_SHIFT + MAX_ORDER - 1) by the page allocator.
+ * to 1 << (PAGE_SHIFT + MAX_ORDER) by the page allocator.
* If the allocation fails, simply return ENOMEM rather than
* warning in the kernel log.
*/