[ofa-general] Re: [PATCH v3] mlx4_ib: Optimize hugetlab pages support

[Eli Cohen]

On Thu, Apr 02, 2009 at 11:31:42PM +0300, Yossi Etigin wrote:
> Hi Eli,
>
> I've placed a printk in the new hugetlb function to print n and j.
> While running the mckey test (attached in bugzilla), I got j=0, n=1.
>
> Why do you say that the number of pages must cover HUGE_PAGES?
> In ib_umem_get, hugetlb is set to 0 only if any of the pages is  
> not-hugetlb - otherwise it's 1. Am I missing something?
>

Only if ALL of the registered area is huge pages, then umem->hugetlb
will remain 1; otherwise it is cleared and we don't execute
handle_hugetlb_user_mr(). In case we do execute
handle_hugetlb_user_mr(), I expect the number of PAGE_SIZEed pages to
fill full huge pages.