[dax:xarray-pagecache 28/61] inode.c:undefined reference to `iomap_bmap'

[dax:xarray-pagecache 28/61] inode.c:undefined reference to `iomap_bmap'

[kbuild test robot]

[-- Attachment #1: Type: text/plain, Size: 1231 bytes --]

tree:   git://git.infradead.org/users/willy/linux-dax.git xarray-pagecache
head:   0bfecd3cf35417860eac76842caa3893e65aebb4
commit: fb3e086789ad090bc77928c19b7d096a1a516ea2 [28/61] isofs iomap
config: arm-netwinder_defconfig (attached as .config)
compiler: arm-linux-gnueabi-gcc (GCC) 7.5.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout fb3e086789ad090bc77928c19b7d096a1a516ea2
        # save the attached .config to linux build tree
        GCC_VERSION=7.5.0 make.cross ARCH=arm 

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

All errors (new ones prefixed by >>):

   fs/isofs/inode.o: In function `_isofs_bmap':
>> inode.c:(.text+0x19c): undefined reference to `iomap_bmap'
   fs/isofs/inode.o: In function `isofs_readahead':
>> inode.c:(.text+0x1b8): undefined reference to `iomap_readahead'
   fs/isofs/inode.o: In function `isofs_readpage':
>> inode.c:(.text+0x1d8): undefined reference to `iomap_readpage'

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

[-- Attachment #2: config.gz --]
[-- Type: application/gzip, Size: 16314 bytes --]