+ err = hidden_dentry->d_inode->i_op->getxattr(hidden_dentry, encoded_name, encoded_value, size);
+ /* unlock_kernel() will be done by caller. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)
+ err = hidden_dentry->d_inode->i_op->getxattr(hidden_dentry, encoded_name, encoded_value, size);
+ /* unlock_kernel() will be done by caller. */
+#if LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,16)