Re: [PATCH 4/4] f2fs: Use module_{subinit, subeixt} helper macros

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

Hi Youling,

kernel test robot noticed the following build warnings:

[auto build test WARNING on kdave/for-next]
[also build test WARNING on linus/master next-20240723]
[cannot apply to jaegeuk-f2fs/dev-test jaegeuk-f2fs/dev soc/for-next v6.10]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Youling-Tang/module-Add-module_subinit-_noexit-and-module_subeixt-helper-macros/20240723-164434
base:   https://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux.git for-next
patch link:    https://lore.kernel.org/r/20240723083239.41533-5-youling.tang%40linux.dev
patch subject: [PATCH 4/4] f2fs: Use module_{subinit, subeixt} helper macros
config: i386-buildonly-randconfig-004-20240724 (https://download.01.org/0day-ci/archive/20240724/202407240204.KcPiCniO-lkp@intel.com/config)
compiler: clang version 18.1.5 (https://github.com/llvm/llvm-project 617a15a9eac96088ae5e9134248d8236e34b91b1)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240724/202407240204.KcPiCniO-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/202407240204.KcPiCniO-lkp@intel.com/

All warnings (new ones prefixed by >>):

   In file included from fs/f2fs/node.c:16:
>> fs/f2fs/f2fs.h:4131:57: warning: non-void function does not return a value [-Wreturn-type]
    4131 | static inline int __init f2fs_create_root_stats(void) { }
         |                                                         ^
   1 warning generated.
--
   In file included from fs/f2fs/data.c:25:
>> fs/f2fs/f2fs.h:4131:57: warning: non-void function does not return a value [-Wreturn-type]
    4131 | static inline int __init f2fs_create_root_stats(void) { }
         |                                                         ^
   fs/f2fs/data.c:2373:10: warning: variable 'index' set but not used [-Wunused-but-set-variable]
    2373 |         pgoff_t index;
         |                 ^
   2 warnings generated.


vim +4131 fs/f2fs/f2fs.h

  4128	
  4129	static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; }
  4130	static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { }
> 4131	static inline int __init f2fs_create_root_stats(void) { }
  4132	static inline void f2fs_destroy_root_stats(void) { }
  4133	static inline void f2fs_update_sit_info(struct f2fs_sb_info *sbi) {}
  4134	#endif
  4135	

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