The {set,clear}_zone_contiguous are built whatever the configuraiton so move the definitions outside the current ifdef to avoid the following compiler warnings: mm/page_alloc.c:1550:6: warning: no previous prototype for âset_zone_contiguousâ [-Wmissing-prototypes] mm/page_alloc.c:1571:6: warning: no previous prototype for âclear_zone_contiguousâ [-Wmissing-prototypes] Signed-off-by: Ben Dooks (Codethink) <ben.dooks@xxxxxxxxxxxxxxx> --- Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Cc: David Hildenbrand <david@xxxxxxxxxx> Cc: linux-mm@xxxxxxxxx Cc: linux-kernel@xxxxxxxxxxxxxxx --- include/linux/memory_hotplug.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/linux/memory_hotplug.h b/include/linux/memory_hotplug.h index f46ea71b4ffd..6a6456040802 100644 --- a/include/linux/memory_hotplug.h +++ b/include/linux/memory_hotplug.h @@ -229,9 +229,6 @@ void put_online_mems(void); void mem_hotplug_begin(void); void mem_hotplug_done(void); -extern void set_zone_contiguous(struct zone *zone); -extern void clear_zone_contiguous(struct zone *zone); - #else /* ! CONFIG_MEMORY_HOTPLUG */ #define pfn_to_online_page(pfn) \ ({ \ @@ -339,6 +336,9 @@ static inline int remove_memory(int nid, u64 start, u64 size) static inline void __remove_memory(int nid, u64 start, u64 size) {} #endif /* CONFIG_MEMORY_HOTREMOVE */ +extern void set_zone_contiguous(struct zone *zone); +extern void clear_zone_contiguous(struct zone *zone); + extern void __ref free_area_init_core_hotplug(int nid); extern int __add_memory(int nid, u64 start, u64 size); extern int add_memory(int nid, u64 start, u64 size); -- 2.24.0.rc1