On Mon, Jun 24, 2019 at 02:54:49AM +0800, kbuild test robot wrote: > Hi Ross, > > Thank you for the patch! Yet something to improve: > > [auto build test ERROR on linus/master] > [also build test ERROR on v5.2-rc6 next-20190621] > [if your patch is applied to the wrong git tree, please drop us a note to help improve the system] > > url: https://github.com/0day-ci/linux/commits/Ross-Zwisler/mm-add-filemap_fdatawait_range_keep_errors/20190623-181603 > config: x86_64-rhel-7.6 (attached as .config) > compiler: gcc-7 (Debian 7.3.0-1) 7.3.0 > reproduce: > # save the attached .config to linux build tree > make ARCH=x86_64 > > If you fix the issue, kindly add following tag > Reported-by: kbuild test robot <lkp@xxxxxxxxx> > > All errors (new ones prefixed by >>): > > >> ERROR: "jbd2_journal_inode_ranged_wait" [fs/ext4/ext4.ko] undefined! > >> ERROR: "jbd2_journal_inode_ranged_write" [fs/ext4/ext4.ko] undefined! Yep, this is caused by the lack of EXPORT_SYMBOL() calls for these two new jbd2 functions. Ted also pointed this out and fixed this up when he was committing: https://patchwork.kernel.org/patch/11007139/#22717091 Thank you for the report!