Hi Bruce,

I love your patch! Yet something to improve:

[auto build test ERROR on nfs/linux-next]
[also build test ERROR on linus/master v5.14-rc6 next-20210816]
[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/J-Bruce-Fields/reexport-lock-fixes-v2/20210816-222314
base:   git://git.linux-nfs.org/projects/trondmy/linux-nfs.git linux-next
config: microblaze-defconfig (attached as .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://github.com/0day-ci/linux/commit/5c0a3bd14dcbd51724884e23da5dcd85a54c6a2a
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review J-Bruce-Fields/reexport-lock-fixes-v2/20210816-222314
        git checkout 5c0a3bd14dcbd51724884e23da5dcd85a54c6a2a
        # save the attached .config 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

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 >>):

   microblaze-linux-ld: fs/lockd/svcsubs.o: in function `nlmsvc_match_sb':
>> (.text+0x84): undefined reference to `nlmsvc_file_inode'
   microblaze-linux-ld: fs/lockd/svcsubs.o: in function `nlm_traverse_files':
   (.text+0x298): undefined reference to `nlmsvc_file_inode'
   microblaze-linux-ld: fs/lockd/svcsubs.o: in function `nlm_release_file':
   (.text+0x7c0): undefined reference to `nlmsvc_file_inode'

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