Hi Shiyang, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on linux/master] [also build test WARNING on linus/master v5.15-rc7 next-20211029] [cannot apply to hnaz-mm/master xfs-linux/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/Shiyang-Ruan/fsdax-introduce-fs-query-to-support-reflink/20211031-232355 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 2f111a6fd5b5297b4e92f53798ca086f7c7d33a4 config: hexagon-randconfig-r016-20211031 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 82ed106567063ea269c6d5669278b733e173a42f) 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/c300bbf1e08492a9c8d51182d055c8477082c1e9 git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Shiyang-Ruan/fsdax-introduce-fs-query-to-support-reflink/20211031-232355 git checkout c300bbf1e08492a9c8d51182d055c8477082c1e9 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> drivers/dax/super.c:61:6: warning: no previous prototype for function 'dax_write_lock' [-Wmissing-prototypes] void dax_write_lock(struct dax_device *dax_dev) ^ drivers/dax/super.c:61:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dax_write_lock(struct dax_device *dax_dev) ^ static >> drivers/dax/super.c:66:6: warning: no previous prototype for function 'dax_write_unlock' [-Wmissing-prototypes] void dax_write_unlock(struct dax_device *dax_dev) ^ drivers/dax/super.c:66:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dax_write_unlock(struct dax_device *dax_dev) ^ static drivers/dax/super.c:449:6: warning: no previous prototype for function 'run_dax' [-Wmissing-prototypes] void run_dax(struct dax_device *dax_dev) ^ drivers/dax/super.c:449:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void run_dax(struct dax_device *dax_dev) ^ static 3 warnings generated. vim +/dax_write_lock +61 drivers/dax/super.c 60 > 61 void dax_write_lock(struct dax_device *dax_dev) 62 { 63 percpu_down_write(&dax_dev->rwsem); 64 } 65 > 66 void dax_write_unlock(struct dax_device *dax_dev) 67 { 68 percpu_up_write(&dax_dev->rwsem); 69 } 70 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@xxxxxxxxxxxx
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