[linux-next:master 3078/3764] mm/z3fold.c:353:3: error: call to undeclared function 'lock_page'; ISO C99 and later do not support implicit function declarations

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head:   4176cf5c5651c33769de83bb61b0287f4ec7719f
commit: a6c37165ca40e362ec07d768ec418afb3c29e4ed [3078/3764] mempolicy.h: remove unnecessary header file inclusions with no test failure
config: arm64-randconfig-004-20241216 (https://download.01.org/0day-ci/archive/20241216/202412160820.Zivm9VbY-lkp@intel.com/config)
compiler: clang version 15.0.7 (https://github.com/llvm/llvm-project 8dfdcc7b7bf66834a761bd8de445840ef68e4d1a)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241216/202412160820.Zivm9VbY-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/202412160820.Zivm9VbY-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/z3fold.c:353:3: error: call to undeclared function 'lock_page'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
                   lock_page(page);
                   ^
   mm/z3fold.c:353:3: note: did you mean 'copy_page'?
   arch/arm64/include/asm/page.h:22:13: note: 'copy_page' declared here
   extern void copy_page(void *to, const void *from);
               ^
>> mm/z3fold.c:355:3: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
                   unlock_page(page);
                   ^
   mm/z3fold.c:1052:3: error: call to undeclared function 'lock_page'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
                   lock_page(page);
                   ^
   mm/z3fold.c:1054:3: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
                   unlock_page(page);
                   ^
>> mm/z3fold.c:1056:12: error: call to undeclared function 'trylock_page'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
                   WARN_ON(!trylock_page(page));
                            ^
   mm/z3fold.c:1056:12: note: did you mean 'try_get_page'?
   include/linux/mm.h:1527:33: note: 'try_get_page' declared here
   static inline __must_check bool try_get_page(struct page *page)
                                   ^
   mm/z3fold.c:1058:3: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations [-Werror,-Wimplicit-function-declaration]
                   unlock_page(page);
                   ^
   6 errors generated.


vim +/lock_page +353 mm/z3fold.c

9a001fc19cccde Vitaly Wool 2016-05-20  348  
9a001fc19cccde Vitaly Wool 2016-05-20  349  /* Resets the struct page fields and frees the page */
1f862989b04ade Vitaly Wool 2019-05-13  350  static void free_z3fold_page(struct page *page, bool headless)
9a001fc19cccde Vitaly Wool 2016-05-20  351  {
1f862989b04ade Vitaly Wool 2019-05-13  352  	if (!headless) {
1f862989b04ade Vitaly Wool 2019-05-13 @353  		lock_page(page);
1f862989b04ade Vitaly Wool 2019-05-13  354  		__ClearPageMovable(page);
1f862989b04ade Vitaly Wool 2019-05-13 @355  		unlock_page(page);
1f862989b04ade Vitaly Wool 2019-05-13  356  	}
5a27aa8220290b Vitaly Wool 2017-02-24  357  	__free_page(page);
5a27aa8220290b Vitaly Wool 2017-02-24  358  }
5a27aa8220290b Vitaly Wool 2017-02-24  359  

:::::: The code at line 353 was first introduced by commit
:::::: 1f862989b04ade61d3aab49184c50e9957f84c7d mm/z3fold.c: support page migration

:::::: TO: Vitaly Wool <vitalywool@gmail.com>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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