[davidhildenbrand:mm_id 18/21] fs/proc/task_mmu.c:33:13: warning: '__folio_page_mapped_exclusively' defined but not used

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

tree:   https://github.com/davidhildenbrand/linux mm_id
head:   e7b8c73a68a2ea10e565e103199eba2d607cb99a
commit: 73e0bb6a2659c8c77f22c342659bcf7c570127d0 [18/21] fs/proc/task_mmu: remove per-page mapcount dependency for PM_MMAP_EXCLUSIVE (CONFIG_NO_PAGE_MAPCOUNT)
config: i386-buildonly-randconfig-006-20241219 (https://download.01.org/0day-ci/archive/20241219/202412190649.8PiCAQvF-lkp@intel.com/config)
compiler: gcc-12 (Debian 12.2.0-14) 12.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20241219/202412190649.8PiCAQvF-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/202412190649.8PiCAQvF-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> fs/proc/task_mmu.c:33:13: warning: '__folio_page_mapped_exclusively' defined but not used [-Wunused-function]
      33 | static bool __folio_page_mapped_exclusively(struct folio *folio, struct page *page)
         |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/__folio_page_mapped_exclusively +33 fs/proc/task_mmu.c

    31	
    32	#ifdef CONFIG_PAGE_MAPCOUNT
  > 33	static bool __folio_page_mapped_exclusively(struct folio *folio, struct page *page)
    34	{
    35		return folio_precise_page_mapcount(folio, page) == 1;
    36	}
    37	#else /* !CONFIG_PAGE_MAPCOUNT */
    38	static bool __folio_page_mapped_exclusively(struct folio *folio, struct page *page)
    39	{
    40		return !folio_likely_mapped_shared(folio);
    41	}
    42	#endif /* CONFIG_PAGE_MAPCOUNT */
    43	

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