[3/3] powerpc/mm: Add comments on vmemmap physical mapping

[Michael Ellerman]

On Thu, 2017-04-06 at 14:14:50 UTC, Anshuman Khandual wrote:
> Adds some explaination on how the vmemmap based struct page layout's
> physical mapping is allocated and tracked through linked list. It
> also keeps note of a possible race condition.
> 
> Signed-off-by: Anshuman Khandual <khandual at linux.vnet.ibm.com>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/39e46751839dfe4c34eb354eee1e27

cheers