ref_pfn           944 arch/x86/mm/pageattr.c 	unsigned long lpaddr, lpinc, ref_pfn, pfn, pfninc = 1;
ref_pfn           971 arch/x86/mm/pageattr.c 		ref_pfn = pmd_pfn(*(pmd_t *)kpte);
ref_pfn           978 arch/x86/mm/pageattr.c 		ref_pfn = pud_pfn(*(pud_t *)kpte);
ref_pfn          1001 arch/x86/mm/pageattr.c 	pfn = ref_pfn;