PFN_SECTION_SHIFT 1064 include/linux/mmzone.h #define PAGES_PER_SECTION       (1UL << PFN_SECTION_SHIFT)
PFN_SECTION_SHIFT 1068 include/linux/mmzone.h 	((1UL << (PFN_SECTION_SHIFT - pageblock_order)) * NR_PAGEBLOCK_BITS)
PFN_SECTION_SHIFT 1074 include/linux/mmzone.h #define pfn_to_section_nr(pfn) ((pfn) >> PFN_SECTION_SHIFT)
PFN_SECTION_SHIFT 1075 include/linux/mmzone.h #define section_nr_to_pfn(sec) ((sec) << PFN_SECTION_SHIFT)