[PATCH 1/4] hugetlbfs: add arch_hugetlb_valid_size

[kbuild test robot]

Hi Mike,

I love your patch! Yet something to improve:

[auto build test ERROR on next-20200318]
[also build test ERROR on v5.6-rc6]
[cannot apply to arm64/for-next/core powerpc/next sparc/master linus/master sparc-next/master v5.6-rc6 v5.6-rc5 v5.6-rc4]
[if your patch is applied to the wrong git tree, please drop us a note to help
improve the system. BTW, we also suggest to use '--base' option to specify the
base tree in git format-patch, please see https://stackoverflow.com/a/37406982]

url:    https://github.com/0day-ci/linux/commits/Mike-Kravetz/Clean-up-hugetlb-boot-command-line-processing/20200319-060943
base:    47780d7892b77e922bbe19b5dea99cde06b2f0e5
config: i386-defconfig (attached as .config)
compiler: gcc-7 (Debian 7.5.0-5) 7.5.0
reproduce:
        # save the attached .config to linux build tree
        make ARCH=i386 

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

All errors (new ones prefixed by >>):

   ld: mm/hugetlb.o: in function `default_hugepagesz_setup':
>> hugetlb.c:(.init.text+0x16): undefined reference to `arch_hugetlb_valid_size'

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