[PATCH 3/3] mm: add missing declaration of memmap_init in linux/mm.h

["Adeodato Simó" <dato@net.com.org.es>]

This follows-up commit dfb3ccd00a06 ("mm: make memmap_init a proper
function"), which changed memmap_init from macro to function.

Signed-off-by: Adeodato Simó <dato@net.com.org.es>
---
scripts/checkpatch.pl complained about use of extern for a prototype,
but I preferred to maintain consistency with surrounding code. -d

 include/linux/mm.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 3eb3bf7774f1..8597b864dd91 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -2268,6 +2268,8 @@ static inline void zero_resv_unavail(void) {}
 #endif
 
 extern void set_dma_reserve(unsigned long new_dma_reserve);
+extern void memmap_init(unsigned long size, int nid,
+			unsigned long zone, unsigned long start_pfn);
 extern void memmap_init_zone(unsigned long, int, unsigned long, unsigned long,
 		enum memmap_context, struct vmem_altmap *);
 extern void setup_per_zone_wmarks(void);
-- 
2.19.2