Hi Kumar, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on bpf-next/master] url: https://github.com/0day-ci/linux/commits/Kumar-Kartikeya-Dwivedi/Introduc... base: https://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next.git master config: hexagon-randconfig-r045-20211122 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project c133fb321f7ca6083ce15b6aa5bf89de6600e649) 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/69cd86892cc99ed54a77816b3c4d78429... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Kumar-Kartikeya-Dwivedi/Introduce-BPF-iterators-for-io_uring-and-epoll/20211123-065555 git checkout 69cd86892cc99ed54a77816b3c4d78429150339c # 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(a)intel.com&gt; All warnings (new ones prefixed by >>): void bpf_io_uring_iter_show_fdinfo(const struct bpf_iter_aux_info *aux, ^ fs/io_uring.c:11190:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void bpf_io_uring_iter_show_fdinfo(const struct bpf_iter_aux_info *aux, ^ static int bpf_io_uring_iter_fill_link_info(const struct bpf_iter_aux_info *aux, ^ fs/io_uring.c:11197:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int bpf_io_uring_iter_fill_link_info(const struct bpf_iter_aux_info *aux, ^ static 2 warnings generated. vim +/bpf_io_uring_iter_show_fdinfo +11190 fs/io_uring.c 11188 11189 #ifdef CONFIG_PROC_FS 11190 void bpf_io_uring_iter_show_fdinfo(const struct bpf_iter_aux_info *aux, 11191 struct seq_file *seq) 11192 { 11193 seq_printf(seq, "io_uring_inode:\t%lu\n", aux->io_uring.inode); 11194 } 11195 #endif 11196 11197 int bpf_io_uring_iter_fill_link_info(const struct bpf_iter_aux_info *aux, 11198 struct bpf_link_info *info) 11199 { 11200 info->iter.io_uring.inode = aux->io_uring.inode; 11201 return 0; 11202 } 11203 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org