[anolis-intel-cloud:devel-5.10 6/6] mm/memory_hotplug.c:664:12: warning: no previous prototype for function '__move_pfn_range_to_zone'

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

tree:   https://gitee.com/anolis/intel-cloud-kernel.git devel-5.10
head:   1535649a0387dabbc4baec56dbc329c3046d3ad1
commit: 6c4a83f3c62b8ef3f8bd1ec3c1d374bf0e12713d [6/6] anolis: mm/memory_hotplug: refactor move_pfn_range_to_zone()
config: x86_64-rhel-9.4-rust (https://download.01.org/0day-ci/archive/20250716/202507162044.llc5U1lr-lkp@intel.com/config)
compiler: clang version 21.0.0git (https://github.com/llvm/llvm-project 16534d19bf50bde879a83f0ae62875e2c5120e64)
rustc: rustc 1.58.0 (02072b482 2022-01-11)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20250716/202507162044.llc5U1lr-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/202507162044.llc5U1lr-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> mm/memory_hotplug.c:664:12: warning: no previous prototype for function '__move_pfn_range_to_zone' [-Wmissing-prototypes]
     664 | void __ref __move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,
         |            ^
   mm/memory_hotplug.c:664:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     664 | void __ref __move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,
         | ^
         | static 
   mm/memory_hotplug.c:995:6: warning: no previous prototype for function '__adjust_present_page_count' [-Wmissing-prototypes]
     995 | void __adjust_present_page_count(struct page *page, struct memory_group *group,
         |      ^
   mm/memory_hotplug.c:995:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
     995 | void __adjust_present_page_count(struct page *page, struct memory_group *group,
         | ^
         | static 
   2 warnings generated.


vim +/__move_pfn_range_to_zone +664 mm/memory_hotplug.c

   663	
 > 664	void __ref __move_pfn_range_to_zone(struct zone *zone, unsigned long start_pfn,
   665					  unsigned long nr_pages, struct vmem_altmap *altmap,
   666					  int migratetype, int phase)
   667	{
   668		struct pglist_data *pgdat = zone->zone_pgdat;
   669		int nid = pgdat->node_id;
   670		unsigned long flags;
   671	
   672		if (phase == MHP_PHASE_DEFAULT || phase == MHP_PHASE_PREPARE) {
   673	#ifdef KIDLED_AGE_NOT_IN_PAGE_FLAGS
   674			kidled_free_page_age(pgdat);
   675	#endif
   676			clear_zone_contiguous(zone);
   677	
   678			/* TODO Huh pgdat is irqsave while zone is not. It used to be like that before */
   679			pgdat_resize_lock(pgdat, &flags);
   680			zone_span_writelock(zone);
   681			if (zone_is_empty(zone))
   682				init_currently_empty_zone(zone, start_pfn, nr_pages);
   683			resize_zone_range(zone, start_pfn, nr_pages);
   684			zone_span_writeunlock(zone);
   685			resize_pgdat_range(pgdat, start_pfn, nr_pages);
   686			pgdat_resize_unlock(pgdat, &flags);
   687		}
   688	
   689		/*
   690		 * TODO now we have a visible range of pages which are not associated
   691		 * with their zone properly. Not nice but set_pfnblock_flags_mask
   692		 * expects the zone spans the pfn range. All the pages in the range
   693		 * are reserved so nobody should be touching them so we should be safe
   694		 */
   695		if (phase == MHP_PHASE_DEFAULT || phase == MHP_PHASE_DEFERRED)
   696			memmap_init_zone(nr_pages, nid, zone_idx(zone), start_pfn, 0,
   697				 MEMINIT_HOTPLUG, altmap, migratetype);
   698	
   699		if (phase == MHP_PHASE_DEFAULT || phase == MHP_PHASE_PREPARE)
   700			set_zone_contiguous(zone);
   701	}
   702	

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