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

[kernel test robot]

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: mips-randconfig-r002-20211220 (https://download.01.org/0day-ci/archive/20211220/202112202302.OWA4emnZ-lkp@xxxxxxxxx/config)
compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 683cbc12b33e5c8dc8d29bf5ed79fbf45763aadd)
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 mips cross compiling tool for clang build
        # apt-get install binutils-mips-linux-gnu
        # 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=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash fs/f2fs/

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

All errors (new ones prefixed by >>):

>> fs/f2fs/data.c:4178:9: error: implicit declaration of function 'dax_writeback_mapping_range' [-Werror,-Wimplicit-function-declaration]
           return dax_writeback_mapping_range(mapping, sbi->s_daxdev, wbc);
                  ^
   1 error generated.


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
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