1 files changed, 6 insertions, 0 deletions

diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c
index 4ed5908c65b0..c99d9512a45b 100644
--- a/mm/pgtable-generic.c
+++ b/mm/pgtable-generic.c
@@ -22,6 +22,12 @@ void pgd_clear_bad(pgd_t *pgd)
         pgd_clear(pgd);
 }
 
+void p4d_clear_bad(p4d_t *p4d)
+{
+        p4d_ERROR(*p4d);
+        p4d_clear(p4d);
+}
+
 void pud_clear_bad(pud_t *pud)
 {
         pud_ERROR(*pud);