Re: [PATCH v3 11/22] mm: add and use unmap_page_range vm_ops hook

[kernel test robot <lkp@intel.com>]

Hi Anthony,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[cannot apply to tip/sched/core trace/for-next tip/x86/core tip/x86/mm kees/for-next/execve linus/master v6.17-rc2]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Anthony-Yznaga/mm-Add-msharefs-filesystem/20250820-091021
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/20250820010415.699353-12-anthony.yznaga%40oracle.com
patch subject: [PATCH v3 11/22] mm: add and use unmap_page_range vm_ops hook
config: arm-randconfig-004-20250821 (https://download.01.org/0day-ci/archive/20250821/202508212332.AB4FbJgR-lkp@intel.com/config)
compiler: clang version 22.0.0git (https://github.com/llvm/llvm-project 93d24b6b7b148c47a2fa228a4ef31524fa1d9f3f)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250821/202508212332.AB4FbJgR-lkp@intel.com/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202508212332.AB4FbJgR-lkp@intel.com/

All errors (new ones prefixed by >>):

>> ld.lld: error: undefined symbol: __unmap_page_range
   >>> referenced by shm.c:604 (ipc/shm.c:604)
   >>>               ipc/shm.o:(shm_unmap_page_range) in archive vmlinux.a

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