Re: [PATCH v9 2/7] mm: introduce clear_pages() and clear_user_pages()

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

Hi Ankur,

kernel test robot noticed the following build errors:

[auto build test ERROR on linus/master]
[also build test ERROR on v6.18-rc6 next-20251121]
[cannot apply to akpm-mm/mm-everything tip/x86/core arm64/for-next/core gerg-m68knommu/for-next deller-parisc/for-next powerpc/next powerpc/fixes s390/features uml/next vgupta-arc/for-next vgupta-arc/for-curr openrisc/for-next]
[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/Ankur-Arora/treewide-provide-a-generic-clear_user_page-variant/20251122-042758
base:   linus/master
patch link:    https://lore.kernel.org/r/20251121202352.494700-3-ankur.a.arora%40oracle.com
patch subject: [PATCH v9 2/7] mm: introduce clear_pages() and clear_user_pages()
config: arc-allnoconfig (https://download.01.org/0day-ci/archive/20251122/202511220604.AijSWn1l-lkp@intel.com/config)
compiler: arc-linux-gcc (GCC) 15.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251122/202511220604.AijSWn1l-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/202511220604.AijSWn1l-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/util.c:1349:6: error: redefinition of 'clear_user_pages'
    1349 | void clear_user_pages(void *addr, unsigned long vaddr,
         |      ^~~~~~~~~~~~~~~~
   In file included from mm/util.c:2:
   include/linux/mm.h:3938:20: note: previous definition of 'clear_user_pages' with type 'void(void *, long unsigned int,  struct page *, unsigned int)'
    3938 | static inline void clear_user_pages(void *addr, unsigned long vaddr,
         |                    ^~~~~~~~~~~~~~~~


vim +/clear_user_pages +1349 mm/util.c

  1347	
  1348	#ifdef clear_user_page
> 1349	void clear_user_pages(void *addr, unsigned long vaddr,

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