Hi Lukas, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on d9abdee5fd5abffd0e763e52fbfa3116de167822] url: https://github.com/0day-ci/linux/commits/Lukas-Czerner/ext4-new-mount-API-conversion/20211021-194735 base: d9abdee5fd5abffd0e763e52fbfa3116de167822 config: hexagon-randconfig-r045-20211021 (attached as .config) compiler: clang version 14.0.0 (https://github.com/llvm/llvm-project 3cea2505fd8d99a9ba0cb625aecfe28a47c4e3f8) 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/0day-ci/linux/commit/1f24609da48024e7cb9c240c222dabc60266bd2f git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Lukas-Czerner/ext4-new-mount-API-conversion/20211021-194735 git checkout 1f24609da48024e7cb9c240c222dabc60266bd2f # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross W=1 ARCH=hexagon If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> fs/ext4/super.c:1595:27: warning: unused variable 'quotatypes' [-Wunused-const-variable] static const char * const quotatypes[] = INITQFNAMES; ^ 1 warning generated. vim +/quotatypes +1595 fs/ext4/super.c a7550b30ab709f Jaegeuk Kim 2016-07-10 1593 ac27a0ec112a08 Dave Kleikamp 2006-10-11 1594 #ifdef CONFIG_QUOTA d60061867303aa Eric Biggers 2017-04-29 @1595 static const char * const quotatypes[] = INITQFNAMES; 689c958cbe6be4 Li Xi 2016-01-08 1596 #define QTYPE2NAME(t) (quotatypes[t]) ac27a0ec112a08 Dave Kleikamp 2006-10-11 1597 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org