Re: [PATCH 3/3 htlb-acct] Demand faulting for huge pages

[Andi Kleen]

Andrew Morton <akpm@xxxxxxxx> writes:

(having written the original SLES9 code I will chime in ...) 

> > +unsigned long
> > +huge_pages_needed(struct address_space *mapping, struct vm_area_struct *vma)
> > +{
> 
> What does this function do?  Seems to count all the present pages within a
> vma which are backed by a particular hugetlbfs file?  Or something?

It counts how many huge pages are still needed to fill up a mapping completely.
In short it counts the holes. I think the name fits.

-Andi

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