Hi Kassey, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on akpm-mm/mm-everything] url: https://github.com/intel-lab-lkp/linux/commits/Kassey-Li/mm-page_owner-c-add-llseek-for-page_owner/20220727-205617 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: arm64-randconfig-r025-20220727 (https://download.01.org/0day-ci/archive/20220728/202207282029.T2NTavCf-lkp@xxxxxxxxx/config) compiler: clang version 15.0.0 (https://github.com/llvm/llvm-project 8dfaecc4c24494337933aff9d9166486ca0949f1) 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 arm64 cross compiling tool for clang build # apt-get install binutils-aarch64-linux-gnu # https://github.com/intel-lab-lkp/linux/commit/5533df4120ec1703df71542154e8c5b0b21ddb10 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Kassey-Li/mm-page_owner-c-add-llseek-for-page_owner/20220727-205617 git checkout 5533df4120ec1703df71542154e8c5b0b21ddb10 # 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=arm64 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 >>): >> mm/page_owner.c:573:8: warning: no previous prototype for function 'llseek_page_owner' [-Wmissing-prototypes] loff_t llseek_page_owner(struct file *file, loff_t offset, int whence) ^ mm/page_owner.c:573:1: note: declare 'static' if the function is not intended to be used outside of this translation unit loff_t llseek_page_owner(struct file *file, loff_t offset, int whence) ^ static 1 warning generated. vim +/llseek_page_owner +573 mm/page_owner.c 572 > 573 loff_t llseek_page_owner(struct file *file, loff_t offset, int whence) 574 { 575 loff_t retval = 0; 576 switch (whence) { 577 case SEEK_CUR: 578 case SEEK_SET: 579 file->f_pos = offset; 580 break; 581 default: 582 retval = -ENXIO; 583 } 584 585 return retval; 586 } 587 -- 0-DAY CI Kernel Test Service https://01.org/lkp
