On Mon, 21 Feb 2011, Dave Hansen wrote:

> 
> Now that the mere act of _looking_ at /proc/$pid/smaps will not
> destroy transparent huge pages, tell how much of the VMA is
> actually mapped with them.
> 
> This way, we can make sure that we're getting THPs where we
> expect to see them.
> 
> v3 - * changed HPAGE_SIZE to HPAGE_PMD_SIZE, probably more correct
>        and also has a nice BUG() in case there was a .config mishap
>      * remove direct reference to ->page_table_lock, and used the
>        passed-in ptl pointer insteadl
> 
> Acked-by: Mel Gorman <mel@csn.ul.ie>
> Acked-by: David Rientjes <rientjes@google.com>
> Signed-off-by: Dave Hansen <dave@linux.vnet.ibm.com>

Reviewed-and-tested-by: Eric B Munson <emunson@mgebm.net>