[dax:xarray-pagecache 67/67] ld.lld: error: undefined symbol: dump_iomap_page

[dax:xarray-pagecache 67/67] ld.lld: error: undefined symbol: dump_iomap_page

[kbuild test robot]

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TO: "Matthew, Wilcox, (Oracle)," <willy@infradead.org>

tree:   git://git.infradead.org/users/willy/linux-dax.git xarray-pagecache
head:   85277e3f0e1527f5f40225fa49a5cb2441b2b548
commit: 85277e3f0e1527f5f40225fa49a5cb2441b2b548 [67/67] debug
config: x86_64-allnoconfig (attached as .config)
compiler: clang version 11.0.0 (https://github.com/llvm/llvm-project 2d068e534f1671459e1b135852c1b3c10502e929)
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
        # install x86_64 cross compiling tool for clang build
        # apt-get install binutils-x86-64-linux-gnu
        git checkout 85277e3f0e1527f5f40225fa49a5cb2441b2b548
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kbuild test robot <lkp@intel.com>

All errors (new ones prefixed by >>, old ones prefixed by <<):

>> ld.lld: error: undefined symbol: dump_iomap_page
>>> referenced by filemap.c
>>>               filemap.o:(wait_on_page_bit_common) in archive mm/built-in.a

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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