MAX_SECTIONS       30 arch/x86/include/asm/mmzone_32.h #define PAGES_PER_SECTION (MAX_NR_PAGES/MAX_SECTIONS)
MAX_SECTIONS       43 arch/x86/mm/numa_32.c s8 physnode_map[MAX_SECTIONS] __read_mostly = { [0 ... (MAX_SECTIONS - 1)] = -1};