include/linux/memcontrol.h:1804:5: error: no previous prototype for 'memcg_charge_bulk_pages'

[kernel test robot]

tree:   https://github.com/0day-ci/linux/commits/UPDATE-20211014-160451/Vasily-Averin/memcg-enable-memory-accounting-in-__alloc_pages_bulk/20211008-172703
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/834132e4456c615433314628b950f9dd10406698
        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@xxxxxxxxx>

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:
>> include/linux/memcontrol.h:1804:5: error: no previous prototype for 'memcg_charge_bulk_pages' [-Werror=missing-prototypes]
    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	
> 1804	int memcg_charge_bulk_pages(gfp_t gfp, int nr_pages,
  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@xxxxxxxxxxxx

Attachment: .config.gz
Description: application/gzip