[rppt:unmapped-alloc/rfc-v2 1/3] mm/unmapped-alloc.c:150:13: sparse: sparse: symbol 'unmapped_pages_alloc' was not declared. Should it be static?

[rppt:unmapped-alloc/rfc-v2 1/3] mm/unmapped-alloc.c:150:13: sparse: sparse: symbol 'unmapped_pages_alloc' was not declared. Should it be static?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git unmapped-alloc/rfc-v2
head:   e55ecf7bdeeb7ef51b93089d7926303e8259641a
commit: c4d7927daa7a7ecd012b341e96b4d22b415c7189 [1/3] mm: intorduce unmapped_alloc()
config: x86_64-randconfig-s021-20230526 (https://download.01.org/0day-ci/archive/20230527/202305271252.DO3CJ6zw-lkp@intel.com/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce:
        # apt-get install sparse
        # sparse version: v0.6.4-39-gce1a6720-dirty
        # https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git/commit/?id=c4d7927daa7a7ecd012b341e96b4d22b415c7189
        git remote add rppt https://git.kernel.org/pub/scm/linux/kernel/git/rppt/linux.git
        git fetch --no-tags rppt unmapped-alloc/rfc-v2
        git checkout c4d7927daa7a7ecd012b341e96b4d22b415c7189
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 olddefconfig
        make W=1 C=1 CF='-fdiagnostic-prefix -D__CHECK_ENDIAN__' O=build_dir ARCH=x86_64 SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202305271252.DO3CJ6zw-lkp@intel.com/

sparse warnings: (new ones prefixed by >>)
>> mm/unmapped-alloc.c:150:13: sparse: sparse: symbol 'unmapped_pages_alloc' was not declared. Should it be static?
>> mm/unmapped-alloc.c:198:6: sparse: sparse: symbol 'unmapped_pages_free' was not declared. Should it be static?

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