[akpm-mm:mm-unstable 9/30] mm/memory-tiers.c:64:6: error: redefinition of 'folio_has_cpupid'

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

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm.git mm-unstable
head:   cecb3db438d76f7c1005fd52689809696a330474
commit: c57ceb62609b36d1a01e8bdd894d032379999b75 [9/30] memory tiering: introduce folio_has_cpupid() check
config: sparc-allmodconfig (https://download.01.org/0day-ci/archive/20240724/202407240024.Lhu1XDok-lkp@intel.com/config)
compiler: sparc64-linux-gcc (GCC) 14.1.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240724/202407240024.Lhu1XDok-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/202407240024.Lhu1XDok-lkp@intel.com/

All errors (new ones prefixed by >>):

>> mm/memory-tiers.c:64:6: error: redefinition of 'folio_has_cpupid'
      64 | bool folio_has_cpupid(struct folio *folio)
         |      ^~~~~~~~~~~~~~~~
   In file included from mm/internal.h:11,
                    from mm/memory-tiers.c:11:
   include/linux/mm.h:1796:20: note: previous definition of 'folio_has_cpupid' with type 'bool(struct folio *)' {aka '_Bool(struct folio *)'}
    1796 | static inline bool folio_has_cpupid(struct folio *folio)
         |                    ^~~~~~~~~~~~~~~~


vim +/folio_has_cpupid +64 mm/memory-tiers.c

    53	
    54	/**
    55	 * folio_has_cpupid - check if a folio has cpupid information
    56	 * @folio: folio to check
    57	 *
    58	 * folio's _last_cpupid field is repurposed by memory tiering. In memory
    59	 * tiering mode, cpupid of slow memory folio (not toptier memory) is used to
    60	 * record page access time.
    61	 *
    62	 * Return: the folio _last_cpupid is used as cpupid
    63	 */
  > 64	bool folio_has_cpupid(struct folio *folio)
    65	{
    66		return !(sysctl_numa_balancing_mode & NUMA_BALANCING_MEMORY_TIERING) ||
    67		       node_is_toptier(folio_nid(folio));
    68	}
    69	

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