-struct super_block *ovl_same_sb(struct super_block *sb)
-{
- struct ovl_fs *ofs = sb->s_fs_info;
-
- if (!ofs->numlowerfs)
- return ofs->upper_mnt->mnt_sb;
- else if (ofs->numlowerfs == 1 && !ofs->upper_mnt)
- return ofs->lower_fs[0].sb;
- else
- return NULL;
-}
-