Hi Jan, I love your patch! Perhaps something to improve: [auto build test WARNING on ext4/dev] [also build test WARNING on ext3/for_next linus/master v5.13-rc6 next-20210616] [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/0day-ci/linux/commits/Jan-Kara/ext4-Speedup-orphan-fil... base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev config: i386-randconfig-s002-20210617 (attached as .config) compiler: gcc-9 (Debian 9.3.0-22) 9.3.0 reproduce: # apt-get install sparse # sparse version: v0.6.3-341-g8af24329-dirty # https://github.com/0day-ci/linux/commit/6b60fad4c555893cdd03e91dbfe31aa6f... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Jan-Kara/ext4-Speedup-orphan-file-handling/20210617-034806 git checkout 6b60fad4c555893cdd03e91dbfe31aa6fa9c25e7 # save the attached .config to linux build tree make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' W=1 ARCH=i386 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; sparse warnings: (new ones prefixed by >>) fs/ext4/orphan.c:195:64: sparse: expected char *qf_name fs/ext4/orphan.c:195:64: sparse: got char [noderef] __rcu * vim +195 fs/ext4/orphan.c 192 193 static int ext4_quota_on_mount(struct super_block *sb, int type) 194 { 196 EXT4_SB(sb)->s_jquota_fmt, type); 197 } 198 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org