[chao:bugfix/syzbot 40/42] fs/f2fs/f2fs.h:4605:5: warning: no previous prototype for function 'f2fs_build_fault_attr'

[chao:bugfix/syzbot 40/42] fs/f2fs/f2fs.h:4605:5: warning: no previous prototype for function 'f2fs_build_fault_attr'

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git bugfix/syzbot
head:   6fd891b7248d0b825dbff6454be21f60c7ba1fb0
commit: 28a4fc03f837d64c67eeeba5ef226dbed4b369dc [40/42] f2fs: check validation of fault attrs in f2fs_build_fault_attr()
config: x86_64-buildonly-randconfig-005-20240507 (https://download.01.org/0day-ci/archive/20240507/202405070512.zeqTIFxN-lkp@intel.com/config)
compiler: clang version 18.1.4 (https://github.com/llvm/llvm-project e6c3289804a67ea0bb6a86fadbe454dd93b8d855)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240507/202405070512.zeqTIFxN-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/202405070512.zeqTIFxN-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from fs/f2fs/hash.c:18:
>> fs/f2fs/f2fs.h:4605:5: warning: no previous prototype for function 'f2fs_build_fault_attr' [-Wmissing-prototypes]
    4605 | int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
         |     ^
   fs/f2fs/f2fs.h:4605:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
    4605 | int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
         | ^
         | static 
   1 warning generated.
--
   In file included from fs/f2fs/node.c:16:
>> fs/f2fs/f2fs.h:4605:5: warning: no previous prototype for function 'f2fs_build_fault_attr' [-Wmissing-prototypes]
    4605 | int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
         |     ^
   fs/f2fs/f2fs.h:4605:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
    4605 | int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
         | ^
         | static 
   fs/f2fs/node.c:1357:1: warning: unused label 'out_dec' [-Wunused-label]
    1357 | out_dec:
         | ^~~~~~~~
   2 warnings generated.


vim +/f2fs_build_fault_attr +4605 fs/f2fs/f2fs.h

  4600	
  4601	#ifdef CONFIG_F2FS_FAULT_INJECTION
  4602	extern int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
  4603								unsigned long type);
  4604	#else
> 4605	int f2fs_build_fault_attr(struct f2fs_sb_info *sbi, unsigned long rate,
  4606								unsigned long type)
  4607	{
  4608		return 0;
  4609	}
  4610	#endif
  4611	

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