Hi Harshad, Thank you for the patch! Perhaps something to improve: [auto build test WARNING on ext4/dev] [also build test WARNING on linus/master v5.9-rc5 next-20200918] [cannot apply to tip/perf/core] [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/Harshad-Shirwadkar/ext4-add-fast... base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev config: x86_64-randconfig-a006-20200917 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project ed79827aea444e6995fb3d36abc2bfd36331773c) 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 # install x86_64 cross compiling tool for clang build # apt-get install binutils-x86-64-linux-gnu # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All warnings (new ones prefixed by >>): seq); ^~~ include/linux/jbd2.h:61:59: note: expanded from macro 'jbd_debug' __jbd2_debug((n), __FILE__, __func__, __LINE__, (fmt), ##a) ^ fs/jbd2/recovery.c:241:18: note: initialize the variable 'seq' to silence this warning unsigned int seq; ^ = 0 1 warning generated. # https://github.com/0day-ci/linux/commit/1edf68c36f8df0e684d1c2bd25d324d43... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Harshad-Shirwadkar/ext4-add-fast-commits-feature/20200919-085652 git checkout 1edf68c36f8df0e684d1c2bd25d324d43da4d444 vim +/seq +258 fs/jbd2/recovery.c 234 235 static int fc_do_one_pass(journal_t *journal, 236 struct recovery_info *info, enum passtype pass) 237 { 238 unsigned int expected_commit_id = info->end_transaction; 239 unsigned long next_fc_block; 240 struct buffer_head *bh; 241 unsigned int seq; 242 int err = 0; 243 244 next_fc_block = journal->j_first_fc; 245 if (!journal->j_fc_replay_callback) 246 return 0; 247 248 while (next_fc_block <= journal->j_last_fc) { 249 jbd_debug(3, "Fast commit replay: next block %ld", 250 next_fc_block); 251 err = jread(&bh, journal, next_fc_block); 252 if (err) { 253 jbd_debug(3, "Fast commit replay: read error"); 254 break; 255 } 256 257 jbd_debug(3, "Processing fast commit blk with seq %d", 259 err = journal->j_fc_replay_callback(journal, bh, pass, 260 next_fc_block - journal->j_first_fc, 261 expected_commit_id); 262 next_fc_block++; 263 if (err < 0 || err == JBD2_FC_REPLAY_STOP) 264 break; 265 err = 0; 266 } 267 268 if (err) 269 jbd_debug(3, "Fast commit replay failed, err = %d\n", err); 270 271 return err; 272 } 273 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org