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7106c51ee9
We need to use this function in common code, so define it for architectures and/or configrations that miss it. The result of pmd_pfn() will only be used if TRANSPARENT_HUGEPAGE is enabled, but a function or macro called pmd_pfn() must be defined, even on machines with two level page tables. Signed-off-by: Mike Rapoport <rppt@linux.ibm.com> Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>