Subject: Re: FW: [PATCH] powerpc/mm: Export HPAGE_SHIFT

From: Roland Dreier <[email-masked]>
Date: Wed, 04 Feb 2009 13:31:43 -0800

> You should be able to find the head of a compound page using the
 > compound_head() inline, so try

 > 	PAGE_SIZE << compound_order(compound_head(page))

Thanks!  Looks like that should be exactly what we need.

 - R.