[android-common:android12-5.10 1/1] mm/compaction.c:766:15: error: redefinition of 'isolate_and_split_free_page'

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

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tree:   https://android.googlesource.com/kernel/common android12-5.10
head:   8cd9aa93b7269460e8d5e4407738f21fe5d6e720
commit: 8cd9aa93b7269460e8d5e4407738f21fe5d6e720 [1/1] ANDROID: implement wrapper for reverse migration
config: x86_64-randconfig-c022-20210420 (attached as .config)
compiler: gcc-9 (Debian 9.3.0-22) 9.3.0
reproduce (this is a W=1 build):
        git remote add android-common https://android.googlesource.com/kernel/common
        git fetch --no-tags android-common android12-5.10
        git checkout 8cd9aa93b7269460e8d5e4407738f21fe5d6e720
        # save the attached .config to linux build tree
        make W=1 W=1 ARCH=x86_64 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All errors (new ones prefixed by >>):

>> mm/compaction.c:766:15: error: redefinition of 'isolate_and_split_free_page'
     766 | unsigned long isolate_and_split_free_page(struct page *page,
         |               ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from mm/compaction.c:14:
   include/linux/compaction.h:241:22: note: previous definition of 'isolate_and_split_free_page' was here
     241 | static unsigned long isolate_and_split_free_page(struct page *page,
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~
   mm/compaction.c:56:27: warning: 'HPAGE_FRAG_CHECK_INTERVAL_MSEC' defined but not used [-Wunused-const-variable=]
      56 | static const unsigned int HPAGE_FRAG_CHECK_INTERVAL_MSEC = 500;
         |                           ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   In file included from mm/compaction.c:14:
   include/linux/compaction.h:241:22: warning: 'isolate_and_split_free_page' defined but not used [-Wunused-function]
     241 | static unsigned long isolate_and_split_free_page(struct page *page,
         |                      ^~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +/isolate_and_split_free_page +766 mm/compaction.c

   765	
 > 766	unsigned long isolate_and_split_free_page(struct page *page,
   767							struct list_head *list)
   768	{
   769		unsigned long isolated;
   770		unsigned int order;
   771	
   772		if (!PageBuddy(page))
   773			return 0;
   774	
   775		order = buddy_order(page);
   776		isolated = __isolate_free_page(page, order);
   777		if (!isolated)
   778			return 0;
   779	
   780		set_page_private(page, order);
   781		list_add(&page->lru, list);
   782	
   783		split_map_pages(list);
   784	
   785		return isolated;
   786	}
   787	EXPORT_SYMBOL_GPL(isolate_and_split_free_page);
   788	

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org

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