[kbuild-all] [djwong-xfs:scrub-rtsummary 23/25] init/do_mounts.c:693: undefined reference to `shmem_init_fs_context'

tree: https://git.kernel.org/pub/scm/linux/kernel/git/djwong/xfs-linux.git scrub-rtsummary head: 6a3195f0b8086aa941c656f91b7a0498e15aad0d commit: 6fdc49bc994d255e80d09aece3521849005b956a [23/25] xfs: create a big array data structure config: h8300-randconfig-r032-20200622 (attached as .config) compiler: h8300-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 6fdc49bc994d255e80d09aece3521849005b956a # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=h8300 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot <lkp(a)intel.com&gt; All errors (new ones prefixed by >>): h8300-linux-ld: init/do_mounts.o: in function `rootfs_init_fs_context': vim +693 init/do_mounts.c 57f150a58c40cd Rob Landley 2013-09-11 688 6e19eded3684dc Rob Landley 2013-09-11 689 static bool is_tmpfs; f32356261d44d5 David Howells 2019-03-25 690 static int rootfs_init_fs_context(struct fs_context *fc) 57f150a58c40cd Rob Landley 2013-09-11 691 { 6e19eded3684dc Rob Landley 2013-09-11 692 if (IS_ENABLED(CONFIG_TMPFS) && is_tmpfs) f32356261d44d5 David Howells 2019-03-25 @693 return shmem_init_fs_context(fc); 6e19eded3684dc Rob Landley 2013-09-11 694 f32356261d44d5 David Howells 2019-03-25 695 return ramfs_init_fs_context(fc); 57f150a58c40cd Rob Landley 2013-09-11 696 } 57f150a58c40cd Rob Landley 2013-09-11 697 :::::: The code at line 693 was first introduced by commit :::::: f32356261d44d580649a7abce1156d15d49cf20f vfs: Convert ramfs, shmem, tmpfs, devtmpfs, rootfs to use the new mount API :::::: TO: David Howells <dhowells(a)redhat.com&gt; :::::: CC: Al Viro <viro(a)zeniv.linux.org.uk&gt; --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org