1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/swapops.h b/include/linux/swapops.h
index 7bf2d149d209..6ec39ab27b4b 100644
--- a/include/linux/swapops.h
+++ b/include/linux/swapops.h
@@ -42,11 +42,13 @@ static inline pgoff_t swp_offset(swp_entry_t entry)
         return entry.val & SWP_OFFSET_MASK(entry);
 }
 
+#ifdef CONFIG_MMU
 /* check whether a pte points to a swap entry */
 static inline int is_swap_pte(pte_t pte)
 {
         return !pte_none(pte) && !pte_present(pte) && !pte_file(pte);
 }
+#endif
 
 /*
  * Convert the arch-dependent pte representation of a swp_entry_t into an