Re: [RFC 0/3] hugetlbfs: optionally reserve all fs pages at mount time

[Andrew Morton]

On Fri, 27 Feb 2015 14:58:08 -0800 Mike Kravetz <mike.kravetz@xxxxxxxxxx> wrote:

> hugetlbfs allocates huge pages from the global pool as needed.  Even if
> the global pool contains a sufficient number pages for the filesystem
> size at mount time, those global pages could be grabbed for some other
> use.  As a result, filesystem huge page allocations may fail due to lack
> of pages.

Well OK, but why is this a sufficiently serious problem to justify
kernel changes?  Please provide enough info for others to be able
to understand the value of the change.
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