[chao-linux:dev 7/7] fs/f2fs/f2fs.h:4027:13: warning: declaration of 'struct extent_info_unaligned' will not be visible outside of this function

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

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tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git dev
head:   2d3893d5b67f8ee259cf86b2493dc25b4fbf7423
commit: 2d3893d5b67f8ee259cf86b2493dc25b4fbf7423 [7/7] f2fs: extent cache: support unaligned extent
config: x86_64-randconfig-c001-20210727 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project c658b472f3e61e1818e1909bf02f3d65470018a5)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?id=2d3893d5b67f8ee259cf86b2493dc25b4fbf7423
        git remote add chao-linux https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git
        git fetch --no-tags chao-linux dev
        git checkout 2d3893d5b67f8ee259cf86b2493dc25b4fbf7423
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   In file included from fs/f2fs/dir.c:13:
>> fs/f2fs/f2fs.h:4027:13: warning: declaration of 'struct extent_info_unaligned' will not be visible outside of this function [-Wvisibility]
                                           struct extent_info_unaligned *eiu);
                                                  ^
   1 warning generated.
--
   In file included from fs/f2fs/extent_cache.c:14:
>> fs/f2fs/f2fs.h:4027:13: warning: declaration of 'struct extent_info_unaligned' will not be visible outside of this function [-Wvisibility]
                                           struct extent_info_unaligned *eiu);
                                                  ^
   fs/f2fs/extent_cache.c:690:31: error: variable has incomplete type 'struct extent_info_unaligned'
           struct extent_info_unaligned eiu;
                                        ^
   fs/f2fs/extent_cache.c:690:9: note: forward declaration of 'struct extent_info_unaligned'
           struct extent_info_unaligned eiu;
                  ^
   1 warning and 1 error generated.


vim +4027 fs/f2fs/f2fs.h

  3995	
  3996	/*
  3997	 * extent_cache.c
  3998	 */
  3999	struct rb_entry *f2fs_lookup_rb_tree(struct rb_root_cached *root,
  4000					struct rb_entry *cached_re, unsigned int ofs);
  4001	struct rb_node **f2fs_lookup_rb_tree_ext(struct f2fs_sb_info *sbi,
  4002					struct rb_root_cached *root,
  4003					struct rb_node **parent,
  4004					unsigned long long key, bool *left_most);
  4005	struct rb_node **f2fs_lookup_rb_tree_for_insert(struct f2fs_sb_info *sbi,
  4006					struct rb_root_cached *root,
  4007					struct rb_node **parent,
  4008					unsigned int ofs, bool *leftmost);
  4009	struct rb_entry *f2fs_lookup_rb_tree_ret(struct rb_root_cached *root,
  4010			struct rb_entry *cached_re, unsigned int ofs,
  4011			struct rb_entry **prev_entry, struct rb_entry **next_entry,
  4012			struct rb_node ***insert_p, struct rb_node **insert_parent,
  4013			bool force, bool *leftmost);
  4014	bool f2fs_check_rb_tree_consistence(struct f2fs_sb_info *sbi,
  4015					struct rb_root_cached *root, bool check_key);
  4016	void f2fs_update_extent_tree_range_unaligned(struct inode *inode,
  4017					pgoff_t fofs, block_t blkaddr, unsigned int llen,
  4018					unsigned int plen);
  4019	unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *sbi, int nr_shrink);
  4020	void f2fs_init_extent_tree(struct inode *inode, struct page *ipage);
  4021	void f2fs_drop_extent_tree(struct inode *inode);
  4022	unsigned int f2fs_destroy_extent_node(struct inode *inode);
  4023	void f2fs_destroy_extent_tree(struct inode *inode);
  4024	bool f2fs_lookup_extent_cache(struct inode *inode, pgoff_t pgofs,
  4025				struct extent_info *ei);
  4026	bool f2fs_lookup_extent_cache_unaligned(struct inode *inode, pgoff_t pgofs,
> 4027						struct extent_info_unaligned *eiu);
  4028	void f2fs_update_extent_cache(struct dnode_of_data *dn);
  4029	void f2fs_update_extent_cache_range(struct dnode_of_data *dn,
  4030				pgoff_t fofs, block_t blkaddr, unsigned int len);
  4031	void f2fs_init_extent_cache_info(struct f2fs_sb_info *sbi);
  4032	int __init f2fs_create_extent_cache(void);
  4033	void f2fs_destroy_extent_cache(void);
  4034	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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