[kbuild-all] include/linux/memcontrol.h:1804:5: error: no previous prototype for 'memcg_charge_bulk_pages'

tree: https://github.com/0day-ci/linux/commits/UPDATE-20211014-160451/Vasily-Av... head: 834132e4456c615433314628b950f9dd10406698 commit: 834132e4456c615433314628b950f9dd10406698 memcg: enable memory accounting in __alloc_pages_bulk date: 8 hours ago config: i386-buildonly-randconfig-r004-20211014 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce (this is a W=1 build): # https://github.com/0day-ci/linux/commit/834132e4456c615433314628b950f9dd1... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review UPDATE-20211014-160451/Vasily-Averin/memcg-enable-memory-accounting-in-__alloc_pages_bulk/20211008-172703 git checkout 834132e4456c615433314628b950f9dd10406698 # save the attached .config to linux build tree make W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): In file included from include/linux/swap.h:9, from include/linux/suspend.h:5, from arch/x86/kernel/asm-offsets.c:13: 1804 | int memcg_charge_bulk_pages(gfp_t gfp, int nr_pages, | ^~~~~~~~~~~~~~~~~~~~~~~ cc1: all warnings being treated as errors make[2]: *** [scripts/Makefile.build:122: arch/x86/kernel/asm-offsets.s] Error 1 make[2]: Target '__build' not remade because of errors. make[1]: *** [Makefile:1315: prepare0] Error 2 make[1]: Target 'prepare' not remade because of errors. make: *** [Makefile:226: __sub-make] Error 2 make: Target 'prepare' not remade because of errors. vim +/memcg_charge_bulk_pages +1804 include/linux/memcontrol.h 1803 1805 struct list_head *page_list, 1806 struct page **page_array) 1807 { 1808 return 0; 1809 } 1810 #endif /* CONFIG_MEMCG_KMEM */ 1811 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org