for_each_present_section_nr  542 mm/sparse.c    	for_each_present_section_nr(pnum_begin, pnum) {
for_each_present_section_nr  565 mm/sparse.c    	for_each_present_section_nr(pnum_begin, pnum) {
for_each_present_section_nr  588 mm/sparse.c    	for_each_present_section_nr(pnum_begin + 1, pnum_end) {