[alibaba-cloud:linux-next 90/644] arch/m68k/include/asm/motorola_pgtable.h:199:11: error: dereferencing pointer to incomplete type 'const struct mm_struct'

[alibaba-cloud:linux-next 90/644] arch/m68k/include/asm/motorola_pgtable.h:199:11: error: dereferencing pointer to incomplete type 'const struct mm_struct'

[kbuild test robot]

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tree:   https://github.com/alibaba/cloud-kernel.git linux-next
head:   e07b931e8ed58352ad4839243454571b6ce59222
commit: c2df7a3ab1e074cd6648ae9bb1cc1e31cc46342c [90/644] device-dax: Move resource pinning+mapping into the common driver
config: m68k-allmodconfig (attached as .config)
compiler: m68k-linux-gcc (GCC) 9.2.0
reproduce:
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        git checkout c2df7a3ab1e074cd6648ae9bb1cc1e31cc46342c
        # save the attached .config to linux build tree
        GCC_VERSION=9.2.0 make.cross ARCH=m68k 

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

All errors (new ones prefixed by >>):

   In file included from arch/m68k/include/asm/pgtable_mm.h:148,
                    from arch/m68k/include/asm/pgtable.h:5,
                    from include/linux/memremap.h:7,
                    from drivers//dax/bus.c:3:
   arch/m68k/include/asm/motorola_pgtable.h: In function 'pgd_offset':
>> arch/m68k/include/asm/motorola_pgtable.h:199:11: error: dereferencing pointer to incomplete type 'const struct mm_struct'
     199 |  return mm->pgd + pgd_index(address);
         |           ^~

vim +199 arch/m68k/include/asm/motorola_pgtable.h

^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  194  
^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  195  /* to find an entry in a page-table-directory */
5b808a593588b2 include/asm-m68k/motorola_pgtable.h Geert Uytterhoeven 2008-02-07  196  static inline pgd_t *pgd_offset(const struct mm_struct *mm,
5b808a593588b2 include/asm-m68k/motorola_pgtable.h Geert Uytterhoeven 2008-02-07  197  				unsigned long address)
^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  198  {
^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16 @199  	return mm->pgd + pgd_index(address);
^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  200  }
^1da177e4c3f41 include/asm-m68k/motorola_pgtable.h Linus Torvalds     2005-04-16  201  

:::::: The code at line 199 was first introduced by commit
:::::: 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 Linux-2.6.12-rc2

:::::: TO: Linus Torvalds <torvalds@ppc970.osdl.org>
:::::: CC: Linus Torvalds <torvalds@ppc970.osdl.org>

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

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