[kas:uffd 4/12] mm/userfaultfd.c:427:17: error: implicit declaration of function 'pmd_modify'; did you mean 'pte_modify'?

[kas:uffd 4/12] mm/userfaultfd.c:427:17: error: implicit declaration of function 'pmd_modify'; did you mean 'pte_modify'?

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/kas/linux.git uffd
head:   bfa1e12c7a014c9ce5d1ae4b8b43dcb8e3d62965
commit: 83ce0c5a2d4e93266638ef2f1d2b58166bae1e8d [4/12] userfaultfd: UFFDIO_CONTINUE for anonymous memory
config: m68k-allyesconfig (https://download.01.org/0day-ci/archive/20260415/202604152151.rLdqv1sG-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 15.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260415/202604152151.rLdqv1sG-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/202604152151.rLdqv1sG-lkp@intel.com/

All errors (new ones prefixed by >>):

   mm/userfaultfd.c: In function 'mfill_atomic_pmd_continue_anon':
>> mm/userfaultfd.c:427:17: error: implicit declaration of function 'pmd_modify'; did you mean 'pte_modify'? [-Wimplicit-function-declaration]
     427 |         entry = pmd_modify(orig_pmd, vma->vm_page_prot);
         |                 ^~~~~~~~~~
         |                 pte_modify
>> mm/userfaultfd.c:427:17: error: incompatible types when assigning to type 'pmd_t' from type 'int'
>> mm/userfaultfd.c:428:17: error: implicit declaration of function 'pmd_mkyoung'; did you mean 'pmd_young'? [-Wimplicit-function-declaration]
     428 |         entry = pmd_mkyoung(entry);
         |                 ^~~~~~~~~~~
         |                 pmd_young
   mm/userfaultfd.c:428:17: error: incompatible types when assigning to type 'pmd_t' from type 'int'
>> mm/userfaultfd.c:430:25: error: implicit declaration of function 'pmd_wrprotect'; did you mean 'pte_wrprotect'? [-Wimplicit-function-declaration]
     430 |                 entry = pmd_wrprotect(entry);
         |                         ^~~~~~~~~~~~~
         |                         pte_wrprotect
   mm/userfaultfd.c:430:25: error: incompatible types when assigning to type 'pmd_t' from type 'int'
>> mm/userfaultfd.c:431:9: error: implicit declaration of function 'set_pmd_at'; did you mean 'set_pte_at'? [-Wimplicit-function-declaration]
     431 |         set_pmd_at(mm, addr & HPAGE_PMD_MASK, pmd, entry);
         |         ^~~~~~~~~~
         |         set_pte_at
>> mm/userfaultfd.c:432:9: error: implicit declaration of function 'update_mmu_cache_pmd'; did you mean 'update_mmu_cache'? [-Wimplicit-function-declaration]
     432 |         update_mmu_cache_pmd(vma, addr, pmd);
         |         ^~~~~~~~~~~~~~~~~~~~
         |         update_mmu_cache


vim +427 mm/userfaultfd.c

   411	
   412	static int mfill_atomic_pmd_continue_anon(struct mm_struct *mm,
   413						  struct vm_area_struct *vma,
   414						  unsigned long addr,
   415						  pmd_t *pmd, pmd_t orig_pmd,
   416						  uffd_flags_t flags)
   417	{
   418		spinlock_t *ptl;
   419		pmd_t entry;
   420	
   421		ptl = pmd_lock(mm, pmd);
   422		if (unlikely(!pmd_same(pmdp_get(pmd), orig_pmd))) {
   423			spin_unlock(ptl);
   424			return -EAGAIN;
   425		}
   426	
 > 427		entry = pmd_modify(orig_pmd, vma->vm_page_prot);
 > 428		entry = pmd_mkyoung(entry);
   429		if (flags & MFILL_ATOMIC_WP)
 > 430			entry = pmd_wrprotect(entry);
 > 431		set_pmd_at(mm, addr & HPAGE_PMD_MASK, pmd, entry);
 > 432		update_mmu_cache_pmd(vma, addr, pmd);
   433		spin_unlock(ptl);
   434		return 0;
   435	}
   436	

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