[bytedance:5.15-velinux 92/92] include/linux/hugetlb.h:261:1: warning: no return statement in function returning non-void

[kernel test robot <lkp@intel.com>]

Hi Mike,

FYI, the error/warning still remains.

tree:   https://github.com/bytedance/kernel.git 5.15-velinux
head:   c71e88ad12bfbc44f855b681ef923e1acc2e984a
commit: ae1584fe66d0d69c4ae034d6afa8abc3c8948614 [92/92] hugetlb: simplify hugetlb handling in follow_page_mask
config: arm64-randconfig-2005-20250719 (https://download.01.org/0day-ci/archive/20250728/202507280509.ZGPb4BId-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 10.5.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250728/202507280509.ZGPb4BId-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202507280509.ZGPb4BId-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from include/linux/migrate.h:8,
                    from mm/vmscan.c:43:
   include/linux/hugetlb.h: In function 'hugetlb_follow_page_mask':
>> include/linux/hugetlb.h:261:1: warning: no return statement in function returning non-void [-Wreturn-type]
     261 | }
         | ^
   mm/vmscan.c: At top level:
   mm/vmscan.c:191:38: error: macro "get_total_swap_pages" passed 1 arguments, but takes just 0
     191 | inline long get_total_swap_pages(void)
         |                                      ^
   In file included from mm/vmscan.c:20:
   include/linux/swap.h:568: note: macro "get_total_swap_pages" defined here
     568 | #define get_total_swap_pages()   0L
         | 
   mm/vmscan.c:192:1: error: expected '=', ',', ';', 'asm' or '__attribute__' before '{' token
     192 | {
         | ^
   mm/vmscan.c: In function 'demote_page_list':
   mm/vmscan.c:778:6: warning: variable 'err' set but not used [-Wunused-but-set-variable]
     778 |  int err;
         |      ^~~
--
   In file included from include/linux/migrate.h:8,
                    from include/linux/balloon_compaction.h:41,
                    from mm/balloon_compaction.c:12:
   include/linux/hugetlb.h: In function 'hugetlb_follow_page_mask':
>> include/linux/hugetlb.h:261:1: warning: no return statement in function returning non-void [-Wreturn-type]
     261 | }
         | ^
--
   In file included from include/linux/migrate.h:8,
                    from mm/page_alloc.c:62:
   include/linux/hugetlb.h: In function 'hugetlb_follow_page_mask':
>> include/linux/hugetlb.h:261:1: warning: no return statement in function returning non-void [-Wreturn-type]
     261 | }
         | ^
   mm/page_alloc.c: At top level:
   mm/page_alloc.c:3986:15: warning: no previous prototype for 'should_fail_alloc_page' [-Wmissing-prototypes]
    3986 | noinline bool should_fail_alloc_page(gfp_t gfp_mask, unsigned int order)
         |               ^~~~~~~~~~~~~~~~~~~~~~


vim +261 include/linux/hugetlb.h

   256	
   257	static inline struct page *hugetlb_follow_page_mask(struct vm_area_struct *vma,
   258					unsigned long address, unsigned int flags)
   259	{
   260		BUILD_BUG(); /* should never be compiled in if !CONFIG_HUGETLB_PAGE*/
 > 261	}
   262	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki