Re: [RFC 2/3] hugetlbfs: coordinate global and subpool reserve accounting

[Andrew Morton]

On Fri, 27 Feb 2015 14:58:11 -0800 Mike Kravetz <mike.kravetz@xxxxxxxxxx> wrote:

> If the pages for a subpool are reserved, then the reservations have
> already been accounted for in the global pool.  Therefore, when
> requesting a new reservation (such as for a mapping) for the subpool
> do not count again in global pool.  However, when actually allocating
> a page for the subpool decrement global reserve count to correspond to
> with decrement in global free pages.

The last sentence made my brain hurt.
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