diff --git a/mm/huge_memory.c b/mm/huge_memory.c
index 5a1771bd5d04d0cf587386cf25919bdf3a4ead2f..950466876625690e7f8e10c852d0ebfb22ebd668 100644
--- a/mm/huge_memory.c
+++ b/mm/huge_memory.c
@@ -509,7 +509,7 @@ void prep_transhuge_page(struct page *page)
 	set_compound_page_dtor(page, TRANSHUGE_PAGE_DTOR);
 }
 
-unsigned long __thp_get_unmapped_area(struct file *filp, unsigned long len,
+static unsigned long __thp_get_unmapped_area(struct file *filp, unsigned long len,
 		loff_t off, unsigned long flags, unsigned long size)
 {
 	unsigned long addr;