Hi Mauricio, [FYI, it's a private test report for your RFC patch.] [auto build test WARNING on ext4/dev] [also build test WARNING on ext3/for_next linus/master v5.9-rc4 next-20200910] [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/Mauricio-Faria-de-Oliveira/ext4-... base: https://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4.git dev config: mips-randconfig-r023-20200909 (attached as .config) compiler: mipsel-linux-gcc (GCC) 9.3.0 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 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=mips 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 >>): fs/ext4/super.c: In function 'ext4_journalled_submit_inode_data_buffers': 521 | .nr_to_write = ~0ULL, | ^ fs/ext4/super.c: In function 'ext4_remount': fs/ext4/super.c:5601:6: warning: variable 'enable_quota' set but not used [-Wunused-but-set-variable] 5601 | int enable_quota = 0; | ^~~~~~~~~~~~ # https://github.com/0day-ci/linux/commit/11b02bfb6d77b9706ed92235e27c08bad... git remote add linux-review https://github.com/0day-ci/linux git fetch --no-tags linux-review Mauricio-Faria-de-Oliveira/ext4-jbd2-data-journal-write-protect-pages-on-transaction-commit/20200911-033554 git checkout 11b02bfb6d77b9706ed92235e27c08badc2161ec vim +521 fs/ext4/super.c 511 512 static int ext4_journalled_submit_inode_data_buffers(struct jbd2_inode *jinode) 513 { 514 struct address_space *mapping = jinode->i_vfs_inode->i_mapping; 515 transaction_t *transaction = jinode->i_transaction; 516 loff_t dirty_start = jinode->i_dirty_start; 517 loff_t dirty_end = jinode->i_dirty_end; 518 519 struct writeback_control wbc = { 520 .sync_mode = WB_SYNC_ALL, 522 .range_start = dirty_start, 523 .range_end = dirty_end, 524 }; 525 526 return write_cache_pages(mapping, &wbc, 527 ext4_journalled_writepage_callback, 528 transaction); 529 } 530 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org