[driver-core:driver-core-testing 2/16] fs/kernfs/mount.c:50:5: sparse: sparse: symbol 'kernfs_statfs' was not declared. Should it be static?

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core.git driver-core-testing
head:   b84388be432d001b3baa782fa047eddb0f375233
commit: 26dd6e284e277f80468f48b4ff8ebfb0e9ca7369 [2/16] kernfs: attach uuid for every kernfs and report it in fsid
config: s390-randconfig-r072-20230730 (https://download.01.org/0day-ci/archive/20230805/[email protected]/config)
compiler: s390-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230805/[email protected]/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 <[email protected]>
| Closes: https://lore.kernel.org/oe-kbuild-all/[email protected]/

sparse warnings: (new ones prefixed by >>)
>> fs/kernfs/mount.c:50:5: sparse: sparse: symbol 'kernfs_statfs' was not declared. Should it be static?

vim +/kernfs_statfs +50 fs/kernfs/mount.c

    49	
  > 50	int kernfs_statfs(struct dentry *dentry, struct kstatfs *buf)
    51	{
    52		simple_statfs(dentry, buf);
    53		buf->f_fsid = uuid_to_fsid(dentry->d_sb->s_uuid.b);
    54		return 0;
    55	}
    56	

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