Hi "Matthew, I love your patch! Yet something to improve: [auto build test ERROR on linus/master] [also build test ERROR on v5.19-rc1 next-20220607] [cannot apply to jaegeuk-f2fs/dev-test trondmy-nfs/linux-next kdave/for-next xfs-linux/for-next] [If your patch is applied to the wrong git tree, kindly drop us a note. And when submitting patch, we suggest to use '--base' as documented in https://git-scm.com/docs/git-format-patch] url: https://github.com/intel-lab-lkp/linux/commits/Matthew-Wilcox-Oracle/Convert-aops-migratepage-to-aops-migrate_folio/20220607-044509 base: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f2906aa863381afb0015a9eb7fefad885d4e5a56 config: ia64-randconfig-r015-20220605 (https://download.01.org/0day-ci/archive/20220607/202206071414.41wGG8fp-lkp@xxxxxxxxx/config) compiler: ia64-linux-gcc (GCC) 11.3.0 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/intel-lab-lkp/linux/commit/b038962c9c8c2ab77c71dfba24356ce24bd7a242 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review Matthew-Wilcox-Oracle/Convert-aops-migratepage-to-aops-migrate_folio/20220607-044509 git checkout b038962c9c8c2ab77c71dfba24356ce24bd7a242 # save the config file mkdir build_dir && cp config build_dir/.config COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-11.3.0 make.cross W=1 O=build_dir ARCH=ia64 SHELL=/bin/bash fs/hugetlbfs/ If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <lkp@xxxxxxxxx> All errors (new ones prefixed by >>): fs/hugetlbfs/inode.c: In function 'hugetlbfs_migrate_folio': >> fs/hugetlbfs/inode.c:990:17: error: implicit declaration of function 'folio_migrate_copy' [-Werror=implicit-function-declaration] 990 | folio_migrate_copy(dst, src); | ^~~~~~~~~~~~~~~~~~ >> fs/hugetlbfs/inode.c:992:17: error: implicit declaration of function 'folio_migrate_flags'; did you mean 'folio_mapping_flags'? [-Werror=implicit-function-declaration] 992 | folio_migrate_flags(dst, src); | ^~~~~~~~~~~~~~~~~~~ | folio_mapping_flags cc1: some warnings being treated as errors vim +/folio_migrate_copy +990 fs/hugetlbfs/inode.c 972 973 static int hugetlbfs_migrate_folio(struct address_space *mapping, 974 struct folio *dst, struct folio *src, 975 enum migrate_mode mode) 976 { 977 int rc; 978 979 rc = migrate_huge_page_move_mapping(mapping, dst, src); 980 if (rc != MIGRATEPAGE_SUCCESS) 981 return rc; 982 983 if (hugetlb_page_subpool(&src->page)) { 984 hugetlb_set_page_subpool(&dst->page, 985 hugetlb_page_subpool(&src->page)); 986 hugetlb_set_page_subpool(&src->page, NULL); 987 } 988 989 if (mode != MIGRATE_SYNC_NO_COPY) > 990 folio_migrate_copy(dst, src); 991 else > 992 folio_migrate_flags(dst, src); 993 994 return MIGRATEPAGE_SUCCESS; 995 } 996 -- 0-DAY CI Kernel Test Service https://01.org/lkp