Hi Hao, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on d8271bf021438f468dab3cd84fe5279b5bbcead8] url: https://github.com/intel-lab-lkp/linux/commits/Hao-Xu/support-nonblock-submission-for-splice-pipe-to-pipe/20220607-161605 base: d8271bf021438f468dab3cd84fe5279b5bbcead8 config: i386-randconfig-s001 (https://download.01.org/0day-ci/archive/20220609/202206090959.CEWN5SEB-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-1) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-26-gb3cf30ba-dirty # https://github.com/intel-lab-lkp/linux/commit/96683840c3f19b77a536a259094d24e0cd93ebc0 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Hao-Xu/support-nonblock-submission-for-splice-pipe-to-pipe/20220607-161605 git checkout 96683840c3f19b77a536a259094d24e0cd93ebc0 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> sparse warnings: (new ones prefixed by >>) >> io_uring/splice.c:91:6: sparse: sparse: symbol 'io_splice_support_nowait' was not declared. Should it be static? -- 0-DAY CI Kernel Test Service https://01.org/lkp
