Hi "Matthew,

Thank you for the patch! Yet something to improve:

[auto build test ERROR on next-20210615]
[cannot apply to hnaz-linux-mm/master xfs-linux/for-next fuse/for-next linus/master v5.13-rc6 v5.13-rc5 v5.13-rc4 v5.13-rc6]
[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/Matthew-Wilcox-Oracle/Further-set_page_dirty-cleanups/20210616-205504
base:    19ae1f2bd9c091059f80646604ccef8a1e614f57
config: m68k-defconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.3.0
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/9367b704615caea2752bf1ec461f19e891936c55
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Matthew-Wilcox-Oracle/Further-set_page_dirty-cleanups/20210616-205504
        git checkout 9367b704615caea2752bf1ec461f19e891936c55
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=m68k 

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 >>, old ones prefixed by <<):

>> ERROR: modpost: "__set_page_dirty_no_writeback" [fs/xfs/xfs.ko] undefined!

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