CC mm/page_alloc.o mm/page_alloc.c: In function '__alloc_pages': mm/page_alloc.c:1389: error: 'CONFIG_BIG_ORDER_ALLOC_NOFAIL_MAGIC' undeclared (first use in this function) mm/page_alloc.c:1389: error: (Each undeclared identifier is reported only once mm/page_alloc.c:1389: error: for each function it appears in.) make[1]: *** [mm/page_alloc.o] Error 1 make: *** [mm] Error 2