tree: https://git.kernel.org/pub/scm/linux/kernel/git/dgc/linux-xfs.git xfs-async-inode-reclaim head: a6b06a056446a604d909fd24f24c78f08f5be671 commit: b41d79366f45c50f9e36b0a64a57357a6f2b40b1 [16/30] xfs: clean up the buffer iodone callback functions config: ia64-defconfig (attached as .config) compiler: ia64-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 git checkout b41d79366f45c50f9e36b0a64a57357a6f2b40b1 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=ia64 If you fix the issue, kindly add following tag as appropriate Reported-by: kbuild test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>, old ones prefixed by <<): ia64-linux-ld: fs/xfs/xfs_buf_item.o: in function `xfs_buf_dquot_iodone': xfs_buf_item.c:(.text+0x2d22): undefined reference to `xfs_dquot_done' --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org