Re: [PATCH RESEND] mempolicy.h: Remove unnecessary header file inclusions with no test failure

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

Hi Junjie,

kernel test robot noticed the following build errors:

[auto build test ERROR on akpm-mm/mm-everything]
[also build test ERROR on brauner-vfs/vfs.all linus/master v6.13-rc2 next-20241211]
[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/Junjie-Fu/mempolicy-h-Remove-unnecessary-header-file-inclusions-with-no-test-failure/20241211-120550
base:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-everything
patch link:    https://lore.kernel.org/r/tencent_C12D22B8989E0314FDE7073D6446186E3C09%40qq.com
patch subject: [PATCH RESEND] mempolicy.h: Remove unnecessary header file inclusions with no test failure
config: i386-buildonly-randconfig-003-20241211 (https://download.01.org/0day-ci/archive/20241212/202412120124.VtMN4Kk6-lkp@intel.com/config)
compiler: clang version 19.1.3 (https://github.com/llvm/llvm-project ab51eccf88f5321e7c60591c5546b254b6afab99)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241212/202412120124.VtMN4Kk6-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/202412120124.VtMN4Kk6-lkp@intel.com/

All errors (new ones prefixed by >>):

   In file included from mm/z3fold.c:30:
   In file included from include/linux/mm.h:2287:
   include/linux/vmstat.h:518:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion]
     518 |         return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_"
         |                               ~~~~~~~~~~~ ^ ~~~
>> mm/z3fold.c:353:3: error: call to undeclared function 'lock_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     353 |                 lock_page(page);
         |                 ^
   mm/z3fold.c:353:3: note: did you mean 'copy_page'?
   arch/x86/include/asm/page_32.h:25:20: note: 'copy_page' declared here
      25 | static inline void copy_page(void *to, void *from)
         |                    ^
>> mm/z3fold.c:355:3: error: call to undeclared function 'unlock_page'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
     355 |                 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 [-Wimplicit-function-declaration]
    1052 |                 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 [-Wimplicit-function-declaration]
    1054 |                 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 [-Wimplicit-function-declaration]
    1056 |                 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
    1527 | 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 [-Wimplicit-function-declaration]
    1058 |                 unlock_page(page);
         |                 ^
   1 warning and 6 errors generated.


vim +/lock_page +353 mm/z3fold.c

9a001fc19cccdeb Vitaly Wool 2016-05-20  348  
9a001fc19cccdeb Vitaly Wool 2016-05-20  349  /* Resets the struct page fields and frees the page */
1f862989b04ade6 Vitaly Wool 2019-05-13  350  static void free_z3fold_page(struct page *page, bool headless)
9a001fc19cccdeb Vitaly Wool 2016-05-20  351  {
1f862989b04ade6 Vitaly Wool 2019-05-13  352  	if (!headless) {
1f862989b04ade6 Vitaly Wool 2019-05-13 @353  		lock_page(page);
1f862989b04ade6 Vitaly Wool 2019-05-13  354  		__ClearPageMovable(page);
1f862989b04ade6 Vitaly Wool 2019-05-13 @355  		unlock_page(page);
1f862989b04ade6 Vitaly Wool 2019-05-13  356  	}
5a27aa8220290b6 Vitaly Wool 2017-02-24  357  	__free_page(page);
5a27aa8220290b6 Vitaly Wool 2017-02-24  358  }
5a27aa8220290b6 Vitaly Wool 2017-02-24  359  

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