[bytedance:5.15-velinux 0/1] include/linux/hugetlb.h:261:1: warning: no return statement in function returning non-void

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

tree:   https://github.com/bytedance/kernel.git 5.15-velinux
head:   de277dab626c9ece4c9cf99ec9c56f23b298a042
commit: ae1584fe66d0d69c4ae034d6afa8abc3c8948614 [0/1] hugetlb: simplify hugetlb handling in follow_page_mask
config: arm64-allnoconfig (https://download.01.org/0day-ci/archive/20250509/202505090239.IT4hYADS-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250509/202505090239.IT4hYADS-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/202505090239.IT4hYADS-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/arm64/mm/fault.c:27:
   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 mm/swap.c:36:
   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 mm/swap.c:40:
   include/linux/dma-buf.h: At top level:
   include/linux/dma-buf.h:674:13: warning: 'is_dma_buf_pages_file' defined but not used [-Wunused-function]
     674 | static bool is_dma_buf_pages_file(struct file *file)
         |             ^~~~~~~~~~~~~~~~~~~~~
--
   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:568:9: 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:778:13: warning: variable 'err' set but not used [-Wunused-but-set-variable]
     778 |         int err;
         |             ^~~
--
   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	

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