Hi qixiaoyu1, Thank you for the patch! Yet something to improve: [auto build test ERROR on v6.2-rc3] [also build test ERROR on linus/master next-20230113] [cannot apply to jaegeuk-f2fs/dev-test jaegeuk-f2fs/dev] [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#_base_tree_information] url: https://github.com/intel-lab-lkp/linux/commits/qixiaoyu1/f2fs-add-sysfs-nodes-to-set-last_age_weight/20230113-211357 patch link: https://lore.kernel.org/r/20230113125859.15651-1-qixiaoyu1%40xiaomi.com patch subject: [PATCH 1/2] f2fs: fix wrong calculation of block age config: i386-randconfig-a014 compiler: gcc-11 (Debian 11.3.0-8) 11.3.0 reproduce (this is a W=1 build): # https://github.com/intel-lab-lkp/linux/commit/17ca20d13dd15a8fb4689cbe1817a8d037915199 git remote add linux-review https://github.com/intel-lab-lkp/linux git fetch --no-tags linux-review qixiaoyu1/f2fs-add-sysfs-nodes-to-set-last_age_weight/20230113-211357 git checkout 17ca20d13dd15a8fb4689cbe1817a8d037915199 # save the config file mkdir build_dir && cp config build_dir/.config make W=1 O=build_dir ARCH=i386 olddefconfig make W=1 O=build_dir ARCH=i386 SHELL=/bin/bash If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All errors (new ones prefixed by >>): ld: fs/f2fs/extent_cache.o: in function `__calculate_block_age': >> fs/f2fs/extent_cache.c:877: undefined reference to `__udivdi3' >> ld: fs/f2fs/extent_cache.c:877: undefined reference to `__udivdi3' vim +877 fs/f2fs/extent_cache.c 873 874 static unsigned long long __calculate_block_age(unsigned long long new, 875 unsigned long long old) 876 { > 877 return new - new / 100 * LAST_AGE_WEIGHT + old / 100 * LAST_AGE_WEIGHT; 878 } 879 -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests