zero_pfn          861 include/asm-generic/pgtable.h 	extern unsigned long zero_pfn;
zero_pfn          862 include/asm-generic/pgtable.h 	unsigned long offset_from_zero_pfn = pfn - zero_pfn;
zero_pfn          871 include/asm-generic/pgtable.h 	extern unsigned long zero_pfn;
zero_pfn          872 include/asm-generic/pgtable.h 	return pfn == zero_pfn;
zero_pfn          877 include/asm-generic/pgtable.h 	extern unsigned long zero_pfn;
zero_pfn          878 include/asm-generic/pgtable.h 	return zero_pfn;
zero_pfn          128 mm/memory.c    unsigned long zero_pfn __read_mostly;
zero_pfn          129 mm/memory.c    EXPORT_SYMBOL(zero_pfn);
zero_pfn          138 mm/memory.c    	zero_pfn = page_to_pfn(ZERO_PAGE(0));