[kbuild-all] [dax:xarray-pagecache 53/55] fs/nfs/internal.h:692:17: error: implicit declaration of function 'page_pos'

tree: git://git.infradead.org/users/willy/linux-dax.git xarray-pagecache head: 51105c1385d98c72f37f71da2cdaae228229a1b0 commit: c58ec0e1f10f48def4deb3f862b6f244d98a4db3 [53/55] nfs: Support large pages config: powerpc-defconfig (attached as .config) compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 1ccde533425a4ba9d379510206ad680ff9702129) reproduce: wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross chmod +x ~/bin/make.cross # install powerpc cross compiling tool for clang build # apt-get install binutils-powerpc-linux-gnu git checkout c58ec0e1f10f48def4deb3f862b6f244d98a4db3 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 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 >>): In file included from fs/nfs/nfs4super.c:11: loff_t start = page_pos(page); ^ 1 error generated. vim +/page_pos +692 fs/nfs/internal.h 684 685 /* 686 * Determine the number of bytes of data the page contains 687 */ 688 static inline 689 unsigned int nfs_page_length(struct page *page) 690 { 691 loff_t i_size = i_size_read(page_file_mapping(page)->host); 693 loff_t end = start + thp_size(page); 694 695 if (i_size < start) 696 return 0; 697 if (i_size < end) 698 return i_size - start; 699 return end - start; 700 } 701 --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org