Hi Jaegeuk, FYI, the error/warning still remains. tree: https://github.com/ammarfaizi2/linux-block google/android/kernel/common/upstream-f2fs-stable-linux-5.4.y head: 86190296f81fdde97e3f30cc127e52bfe9dfca64 commit: 510e16de6b283b071f584c6aabdff7acf1831600 [505/902] f2fs: remove obsolete f2fs.txt reproduce: # https://github.com/ammarfaizi2/linux-block/commit/510e16de6b283b071f584c6aabdff7acf1831600 git remote add ammarfaizi2-block https://github.com/ammarfaizi2/linux-block git fetch --no-tags ammarfaizi2-block google/android/kernel/common/upstream-f2fs-stable-linux-5.4.y git checkout 510e16de6b283b071f584c6aabdff7acf1831600 make menuconfig # enable CONFIG_COMPILE_TEST, CONFIG_WARN_MISSING_DOCUMENTS, CONFIG_WARN_ABI_ERRORS make htmldocs If you fix the issue, kindly add following tag where applicable | Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> Warning: MAINTAINERS references a file that doesn't exist: Documentation/filesystems/f2fs.txt -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests