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: mips-buildonly-randconfig-r001-20220607 (https://download.01.org/0day-ci/archive/20220608/202206080550.7nXmrsiv-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project b92436efcb7813fc481b30f2593a4907568d917a) 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 # install mips cross compiling tool for clang build # apt-get install binutils-mips-linux-gnu # 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 COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 O=build_dir ARCH=mips SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All warnings (new ones prefixed by >>): >> io_uring/splice.c:91:6: warning: no previous prototype for function 'io_splice_support_nowait' [-Wmissing-prototypes] bool io_splice_support_nowait(struct file *in, struct file *out) ^ io_uring/splice.c:91:1: note: declare 'static' if the function is not intended to be used outside of this translation unit bool io_splice_support_nowait(struct file *in, struct file *out) ^ static 1 warning generated. vim +/io_splice_support_nowait +91 io_uring/splice.c 90 > 91 bool io_splice_support_nowait(struct file *in, struct file *out) 92 { 93 if (get_pipe_info(in, true) && get_pipe_info(out, true)) 94 return true; 95 96 return false; 97 } 98 -- 0-DAY CI Kernel Test Service https://01.org/lkp
