Hi Shiyang,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linux/master]
[also build test WARNING on linus/master v5.17-rc1 next-20220127]
[cannot apply to xfs-linux/for-next]
[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/20220127-204239
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2c271fe77d52a0555161926c232cd5bc07178b39
config: ia64-defconfig (https://download.01.org/0day-ci/archive/20220128/202201280101.4ECasWmD-lkp@intel.com/config)
compiler: ia64-linux-gcc (GCC) 11.2.0
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://github.com/0day-ci/linux/commit/cb7650562991fc273fbf4c53b6e3db4bb9bb0b5e
        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/20220127-204239
        git checkout cb7650562991fc273fbf4c53b6e3db4bb9bb0b5e
        # save the config file to linux build tree
        mkdir build_dir
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.2.0 make.cross O=build_dir ARCH=ia64 SHELL=/bin/bash fs/xfs/

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/xfs/xfs_buf.h:14,
                    from fs/xfs/xfs_linux.h:80,
                    from fs/xfs/xfs.h:22,
                    from fs/xfs/xfs_notify_failure.c:6:
   include/linux/dax.h:73:30: warning: 'struct dax_holder_operations' declared inside parameter list will not be visible outside of this definition or declaration
      73 |                 const struct dax_holder_operations *ops)
         |                              ^~~~~~~~~~~~~~~~~~~~~
   fs/xfs/xfs_notify_failure.c:220:14: error: variable 'xfs_dax_holder_operations' has initializer but incomplete type
     220 | const struct dax_holder_operations xfs_dax_holder_operations = {
         |              ^~~~~~~~~~~~~~~~~~~~~
   fs/xfs/xfs_notify_failure.c:221:10: error: 'const struct dax_holder_operations' has no member named 'notify_failure'
     221 |         .notify_failure         = xfs_dax_notify_failure,
         |          ^~~~~~~~~~~~~~
>> fs/xfs/xfs_notify_failure.c:221:35: warning: excess elements in struct initializer
     221 |         .notify_failure         = xfs_dax_notify_failure,
         |                                   ^~~~~~~~~~~~~~~~~~~~~~
   fs/xfs/xfs_notify_failure.c:221:35: note: (near initialization for 'xfs_dax_holder_operations')
   fs/xfs/xfs_notify_failure.c:220:36: error: storage size of 'xfs_dax_holder_operations' isn't known
     220 | const struct dax_holder_operations xfs_dax_holder_operations = {
         |                                    ^~~~~~~~~~~~~~~~~~~~~~~~~


vim +221 fs/xfs/xfs_notify_failure.c

   219	
   220	const struct dax_holder_operations xfs_dax_holder_operations = {
 > 221		.notify_failure		= xfs_dax_notify_failure,

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