Hi Christian,

I love your patch! Yet something to improve:

[auto build test ERROR on linux/master]
[also build test ERROR on v5.6 next-20200408]
[cannot apply to driver-core/driver-core-testing block/for-next linus/master]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Christian-Brauner/loopfs/20200409-030206
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f5ae2ea6347a308cfe91f53b53682ce635497d0d
config: c6x-evmc6678_defconfig (attached as .config)
compiler: c6x-elf-gcc (GCC) 9.3.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # save the attached .config to linux build tree
        GCC_VERSION=9.3.0 make.cross ARCH=c6x 

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

All errors (new ones prefixed by >>):

   c6x-elf-ld: warning: section `.far' type changed to PROGBITS
   c6x-elf-ld: warning: section `.far' type changed to PROGBITS
   c6x-elf-ld: fs/kernfs/dir.o: in function `kernfs_iop_lookup':
   dir.c:(.text+0x534): undefined reference to `init_net'
>> c6x-elf-ld: dir.c:(.text+0x538): undefined reference to `init_net'
   c6x-elf-ld: fs/kernfs/dir.o: in function `kernfs_dir_pos':
   dir.c:(.text+0xb74): undefined reference to `init_net'
   c6x-elf-ld: dir.c:(.text+0xb78): undefined reference to `init_net'
   c6x-elf-ld: fs/kernfs/dir.o: in function `kernfs_fop_readdir':
   dir.c:(.text+0xe54): undefined reference to `init_net'
   c6x-elf-ld: fs/kernfs/dir.o:dir.c:(.text+0xe60): more undefined references to `init_net' follow

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