[chao:feature/dax 5/9] fs/f2fs/data.c:4178:16: error: implicit declaration of function 'dax_writeback_mapping_range'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git feature/dax
head:   d08999836fd60ab725eee1f5a5fb3b00f7bcefd3
commit: 2908c6445a36c37b0af40ba94f72c957a87d8fd8 [5/9] f2fs: support dax address space operation
config: microblaze-randconfig-r015-20211220 (https://download.01.org/0day-ci/archive/20211221/202112210648.cDXIAYGW-lkp@intel.com/config)
compiler: microblaze-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://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git/commit/?id=2908c6445a36c37b0af40ba94f72c957a87d8fd8
        git remote add chao https://git.kernel.org/pub/scm/linux/kernel/git/chao/linux.git
        git fetch --no-tags chao feature/dax
        git checkout 2908c6445a36c37b0af40ba94f72c957a87d8fd8
        # 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=microblaze SHELL=/bin/bash fs/f2fs/

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

All errors (new ones prefixed by >>):

   fs/f2fs/data.c: In function 'f2fs_dax_writepages':
>> fs/f2fs/data.c:4178:16: error: implicit declaration of function 'dax_writeback_mapping_range' [-Werror=implicit-function-declaration]
    4178 |         return dax_writeback_mapping_range(mapping, sbi->s_daxdev, wbc);
         |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   cc1: some warnings being treated as errors


vim +/dax_writeback_mapping_range +4178 fs/f2fs/data.c

  4169	
  4170	static int f2fs_dax_writepages(struct address_space *mapping,
  4171						struct writeback_control *wbc)
  4172	{
  4173		struct f2fs_sb_info *sbi = F2FS_I_SB(mapping->host);
  4174	
  4175		if (unlikely(f2fs_cp_error(sbi)))
  4176			return -EIO;
  4177	
> 4178		return dax_writeback_mapping_range(mapping, sbi->s_daxdev, wbc);
  4179	}
  4180	

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