1 files changed, 5 insertions, 0 deletions

diff --git a/mm/hugetlb.c b/mm/hugetlb.c
index 271e4432734c..716465ae57aa 100644
--- a/mm/hugetlb.c
+++ b/mm/hugetlb.c
@@ -3789,6 +3789,11 @@ pte_t *huge_pmd_share(struct mm_struct *mm, unsigned long addr, pud_t *pud)
 {
         return NULL;
 }
+
+int huge_pmd_unshare(struct mm_struct *mm, unsigned long *addr, pte_t *ptep)
+{
+        return 0;
+}
 #define want_pmd_share()        (0)
 #endif /* CONFIG_ARCH_WANT_HUGE_PMD_SHARE */