[RFC 2/3] mm: export zap_page_range()

[Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>]

Module target_core_user will use it to implement zero copy feature.

Signed-off-by: Xiaoguang Wang <xiaoguang.wang@linux.alibaba.com>
---
 mm/memory.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/mm/memory.c b/mm/memory.c
index 1f745e4d11c2..9974d0406dad 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -1664,6 +1664,7 @@ void zap_page_range(struct vm_area_struct *vma, unsigned long start,
 	mmu_notifier_invalidate_range_end(&range);
 	tlb_finish_mmu(&tlb);
 }
+EXPORT_SYMBOL_GPL(zap_page_range);
 
 /**
  * zap_page_range_single - remove user pages in a given range
-- 
2.14.4.44.g2045bb6