NR_MEM_SECTIONS 1120 include/linux/mmzone.h #define NR_SECTION_ROOTS DIV_ROUND_UP(NR_MEM_SECTIONS, SECTIONS_PER_ROOT) NR_MEM_SECTIONS 1184 include/linux/mmzone.h if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS) NR_MEM_SECTIONS 1192 include/linux/mmzone.h if (pfn_to_section_nr(pfn) >= NR_MEM_SECTIONS)