Hi Shiyang,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.13]
[cannot apply to hnaz-linux-mm/master xfs-linux/for-next dm/for-next next-20210625]
[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]

url:    https://github.com/0day-ci/linux/commits/Shiyang-Ruan/fsdax-introduce-fs-query-to-support-reflink/20210628-080346
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 62fb9874f5da54fdb243003b386128037319b219
config: x86_64-randconfig-a002-20210628 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 4c92e31dd0f1bd152eda883af20ff7fbcaa14945)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        # https://github.com/0day-ci/linux/commit/6833b9441ae13413e20968838cd8de34b8c69ed4
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Shiyang-Ruan/fsdax-introduce-fs-query-to-support-reflink/20210628-080346
        git checkout 6833b9441ae13413e20968838cd8de34b8c69ed4
        # 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 >>):

   fs/xfs/xfs_super.c:1103:10: warning: unused variable 'flags' [-Wunused-variable]
           int                             *flags = data;
                                            ^
>> fs/xfs/xfs_super.c:1101:25: warning: variable 'mapping' set but not used [-Wunused-but-set-variable]
           struct address_space            *mapping;
                                            ^
   2 warnings generated.


vim +/mapping +1101 fs/xfs/xfs_super.c

  1093	
  1094	static int
  1095	xfs_corrupt_helper(
  1096		struct xfs_btree_cur		*cur,
  1097		struct xfs_rmap_irec		*rec,
  1098		void				*data)
  1099	{
  1100		struct xfs_inode		*ip;
> 1101		struct address_space		*mapping;
  1102		int				error = 0;
  1103		int				*flags = data;
  1104	
  1105		if (XFS_RMAP_NON_INODE_OWNER(rec->rm_owner) ||
  1106		    (rec->rm_flags & (XFS_RMAP_ATTR_FORK | XFS_RMAP_BMBT_BLOCK))) {
  1107			// TODO check and try to fix metadata
  1108			xfs_force_shutdown(cur->bc_mp, SHUTDOWN_CORRUPT_META);
  1109			return -EFSCORRUPTED;
  1110		}
  1111	
  1112		/*
  1113		 * Get files that incore, filter out others that are not in use.
  1114		 */
  1115		error = xfs_iget(cur->bc_mp, cur->bc_tp, rec->rm_owner, XFS_IGET_INCORE,
  1116				0, &ip);
  1117		if (error)
  1118			return error;
  1119	
  1120		mapping = VFS_I(ip)->i_mapping;
  1121	

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