1 files changed, 2 insertions, 0 deletions

diff --git a/include/asm-x86_64/pgtable.h b/include/asm-x86_64/pgtable.h
index 7a07196a7202..7309fffeec9a 100644
--- a/include/asm-x86_64/pgtable.h
+++ b/include/asm-x86_64/pgtable.h
@@ -105,6 +105,8 @@ static inline void pgd_clear (pgd_t * pgd)
 
 #define ptep_get_and_clear(mm,addr,xp)  __pte(xchg(&(xp)->pte, 0))
 
+struct mm_struct;
+
 static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long addr, pte_t *ptep, int full)
 {
         pte_t pte;