Re: [v1 1/6] mm: hugetlb: Skip prep of tail pages when HVO is enabled

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

Hi Usama,

kernel test robot noticed the following build warnings:

[auto build test WARNING on akpm-mm/mm-everything]

url:    https://github.com/intel-lab-lkp/linux/commits/Usama-Arif/mm-hugetlb-Skip-prep-of-tail-pages-when-HVO-is-enabled/20230728-044839
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20230727204624.1942372-2-usama.arif%40bytedance.com
patch subject: [v1 1/6] mm: hugetlb: Skip prep of tail pages when HVO is enabled
config: arm64-randconfig-r032-20230727 (https://download.01.org/0day-ci/archive/20230728/202307281922.cdKbT0tX-lkp@intel.com/config)
compiler: clang version 17.0.0 (https://github.com/llvm/llvm-project.git 4a5ac14ee968ff0ad5d2cc1ffa0299048db4c88a)
reproduce: (https://download.01.org/0day-ci/archive/20230728/202307281922.cdKbT0tX-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/202307281922.cdKbT0tX-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from mm/hugetlb.c:49:
>> mm/hugetlb_vmemmap.h:56:6: warning: no previous prototype for function 'vmemmap_should_optimize' [-Wmissing-prototypes]
      56 | bool vmemmap_should_optimize(const struct hstate *h, const struct page *head)
         |      ^
   mm/hugetlb_vmemmap.h:56:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
      56 | bool vmemmap_should_optimize(const struct hstate *h, const struct page *head)
         | ^
         | static 
   1 warning generated.


vim +/vmemmap_should_optimize +56 mm/hugetlb_vmemmap.h

    55	
  > 56	bool vmemmap_should_optimize(const struct hstate *h, const struct page *head)
    57	{
    58		return false;
    59	}
    60	

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