[akpm-mm:mm-unstable 360/372] include/linux/swap.h:565:6: warning: no previous prototype for function 'swap_free_nr'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   de14d5f2a9ff2df737a01575ee95bc5a35f5853d
commit: ca23b4d4cae5d32a9d22fb3c39550dcf43df83f9 [360/372] mm: swap: introduce swap_free_nr() for batched swap_free()
config: x86_64-allnoconfig (https://download.01.org/0day-ci/archive/20240411/202404111223.DDjEQDHj-lkp@intel.com/config)
compiler: clang version 17.0.6 (https://github.com/llvm/llvm-project 6009708b4367171ccdbf4b5905cb6a803753fe18)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240411/202404111223.DDjEQDHj-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/202404111223.DDjEQDHj-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from arch/x86/kernel/asm-offsets.c:14:
   In file included from include/linux/suspend.h:5:
>> include/linux/swap.h:565:6: warning: no previous prototype for function 'swap_free_nr' [-Wmissing-prototypes]
     565 | void swap_free_nr(swp_entry_t entry, int nr_pages)
         |      ^
   include/linux/swap.h:565:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     565 | void swap_free_nr(swp_entry_t entry, int nr_pages)
         | ^
         | static 
   1 warning generated.
--
   In file included from arch/x86/kernel/reboot.c:33:
   In file included from arch/x86/include/asm/efi.h:7:
   In file included from arch/x86/include/asm/tlb.h:8:
   In file included from include/asm-generic/tlb.h:15:
>> include/linux/swap.h:565:6: warning: no previous prototype for function 'swap_free_nr' [-Wmissing-prototypes]
     565 | void swap_free_nr(swp_entry_t entry, int nr_pages)
         |      ^
   include/linux/swap.h:565:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     565 | void swap_free_nr(swp_entry_t entry, int nr_pages)
         | ^
         | static 
   arch/x86/kernel/reboot.c:972:20: warning: unused function 'nmi_shootdown_cpus_on_restart' [-Wunused-function]
     972 | static inline void nmi_shootdown_cpus_on_restart(void) { }
         |                    ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   2 warnings generated.
--
   In file included from arch/x86/kernel/asm-offsets.c:14:
   In file included from include/linux/suspend.h:5:
>> include/linux/swap.h:565:6: warning: no previous prototype for function 'swap_free_nr' [-Wmissing-prototypes]
     565 | void swap_free_nr(swp_entry_t entry, int nr_pages)
         |      ^
   include/linux/swap.h:565:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     565 | void swap_free_nr(swp_entry_t entry, int nr_pages)
         | ^
         | static 
   1 warning generated.


vim +/swap_free_nr +565 include/linux/swap.h

   564	
 > 565	void swap_free_nr(swp_entry_t entry, int nr_pages)
   566	{
   567	}
   568	

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