--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -3217,8 +3217,9 @@ static inline void inode_dio_begin(struc
  */
 static inline void inode_dio_end(struct inode *inode)
 {
-	if (atomic_dec_and_test(&inode->i_dio_count))
-		wake_up_bit(&inode->i_state, __I_DIO_WAKEUP);
+	atomic_dec(&inode->i_dio_count);
+	smp_mb__after_atomic();
+	wake_up_bit(&inode->i_state, __I_DIO_WAKEUP);
 }
 
 /*