Re: [RFC PATCH 2/2] mm: add zero_user_folio_segments()

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

Hi Yin,

[FYI, it's a private test report for your RFC patch.]
[auto build test ERROR on linus/master]
[also build test ERROR on v6.2-rc8 next-20230216]
[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/Yin-Fengwei/mm-remove-duplicated-flush_dcache_folio/20230217-004045
patch link:    https://lore.kernel.org/r/20230216160528.2146188-3-fengwei.yin%40intel.com
patch subject: [RFC PATCH 2/2] mm: add zero_user_folio_segments()
config: csky-defconfig (https://download.01.org/0day-ci/archive/20230217/202302170219.WWlo7XAx-lkp@intel.com/config)
compiler: csky-linux-gcc (GCC) 12.1.0
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
        # https://github.com/intel-lab-lkp/linux/commit/24ce10c4a39cf847063c9d8ea4157882f13d7143
        git remote add linux-review https://github.com/intel-lab-lkp/linux
        git fetch --no-tags linux-review Yin-Fengwei/mm-remove-duplicated-flush_dcache_folio/20230217-004045
        git checkout 24ce10c4a39cf847063c9d8ea4157882f13d7143
        # save the config file
        mkdir build_dir && cp config build_dir/.config
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=csky olddefconfig
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=csky SHELL=/bin/bash

If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@intel.com>
| Link: https://lore.kernel.org/oe-kbuild-all/202302170219.WWlo7XAx-lkp@intel.com/

All errors (new ones prefixed by >>):

   csky-linux-ld: mm/truncate.o: in function `truncate_inode_partial_folio':
   truncate.c:(.text+0x754): undefined reference to `zero_user_folio_segments'
>> csky-linux-ld: truncate.c:(.text+0x7e4): undefined reference to `zero_user_folio_segments'
   csky-linux-ld: mm/shmem.o: in function `shmem_get_folio_gfp.constprop.0':
   shmem.c:(.text+0x1cb8): undefined reference to `zero_user_folio_segments'
>> csky-linux-ld: shmem.c:(.text+0x1d40): undefined reference to `zero_user_folio_segments'
>> csky-linux-ld: mm/highmem.o:(___ksymtab+zero_user_folio_segments+0x0): undefined reference to `zero_user_folio_segments'
   csky-linux-ld: fs/libfs.o:libfs.c:(.text+0x614): more undefined references to `zero_user_folio_segments' follow

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests