Re: [RFC][PATCH] make /proc/pid/pagemap work with huge pages andreturn page size

[Dave Hansen]

On Wed, 2008-03-05 at 17:00 +0100, Hans Rosenfeld wrote:
> 
> There are a few reserved bits in the pte part of the union that could
> be
> used to extend the pfn or add more status bits in future (a ronly bit,

Were you able to find any other instances of these bitfields being used
for kernel<->user communication?  I thought you were going to check to
see if we could depend on the layout, or if it changed between
compilers.

-- Dave

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