linux-kernel - Re: FW: [PATCH] powerpc/mm: Export HPAGE

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Date:	Wed, 04 Feb 2009 13:31:43 -0800
From:	Roland Dreier <rdreier@...co.com>
To:	wli@...ementarian.org
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Eli Cohen <eli@...lanox.co.il>, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org
Subject: Re: FW: [PATCH] powerpc/mm: Export HPAGE_SHIFT

 > 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.
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