On Mon, Jun 07, 2021 at 09:06:54AM +0800, kernel test robot wrote: > Hi Changbin, > > I love your patch! Perhaps something to improve: > > [auto build test WARNING on lwn/docs-next] > [also build test WARNING on linus/master v5.13-rc5 next-20210604] > [cannot apply to v9fs/for-next] > [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/Changbin-Du/9p-add-support-for-root-file-systems/20210607-071229 > base: git://git.lwn.net/linux-2.6 docs-next > config: arm-allyesconfig (attached as .config) > compiler: arm-linux-gnueabi-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/96098f751038703cc0fda4f018236d240a86930d > git remote add linux-review https://github.com/0day-ci/linux > git fetch --no-tags linux-review Changbin-Du/9p-add-support-for-root-file-systems/20210607-071229 > git checkout 96098f751038703cc0fda4f018236d240a86930d > # save the attached .config to linux build tree > COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=arm > > If you fix the issue, kindly add following tag as appropriate > Reported-by: kernel test robot <lkp@xxxxxxxxx> > > All warnings (new ones prefixed by >>): > > >> fs/9p/v9fsroot.c:53:12: warning: no previous prototype for 'v9fs_root_data' [-Wmissing-prototypes] > 53 | int __init v9fs_root_data(char **dev, char **opts) > | ^~~~~~~~~~~~~~ > This just follows the existing rootfs support manner. This function doesn't have a dedicated header file to place. So I think we can ignore this warning. > > vim +/v9fs_root_data +53 fs/9p/v9fsroot.c > > 52 > > 53 int __init v9fs_root_data(char **dev, char **opts) > > --- > 0-DAY CI Kernel Test Service, Intel Corporation > https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx -- Cheers, Changbin Du