Hi Edward, 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/Edward-Wu/mm-cma-sync-everything-after-EBUSY/20220615-101716 base: https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything config: x86_64-randconfig-s022 (https://download.01.org/0day-ci/archive/20220621/202206211055.X7Tcbmrt-lkp@xxxxxxxxx/config) compiler: gcc-11 (Debian 11.3.0-3) 11.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.4-30-g92122700-dirty # https://github.com/intel-lab-lkp/linux/commit/ef04552ed13eb371365fcc55c7ae1e5c3c211168 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Edward-Wu/mm-cma-sync-everything-after-EBUSY/20220615-101716 git checkout ef04552ed13eb371365fcc55c7ae1e5c3c211168 # 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=x86_64 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 >>) >> mm/cma.c:415:6: sparse: sparse: symbol 'cma_sync_work' was not declared. Should it be static? >> mm/cma.c:422:6: sparse: sparse: symbol 'cma_ebusy_sync_pinned_pages' was not declared. Should it be static? -- 0-DAY CI Kernel Test Service https://01.org/lkp
