On Mon, Jul 30, 2012 at 04:52:09PM +0530, Aneesh Kumar K.V wrote:
> From: "Aneesh Kumar K.V" <aneesh.ku...@linux.vnet.ibm.com>
> 
> This patch convert different functions to take virtual page number
> instead of virtual address. Virtual page number is virtual address
> shifted right by VPN_SHIFT (12) bits. This enable us to have an
> address range of upto 76 bits.

Mostly looks good.  I don't think it's necessary to add the
BUILD_BUG_ON and BUG_ON conditions.  I would think a comment next to
the definition saying that VPN_SHIFT can be at most 12 would be
sufficient.

Paul.
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