#endif /* HAVE_1ARG_INVALIDATE_BDEV */
/*
+ * 2.6.27 API change
+ * The function was exported for use, prior to this it existed by the
+ * symbol was not exported.
+ */
+#ifndef HAVE_LOOKUP_BDEV
+# define lookup_bdev(path) ERR_PTR(-ENOTSUP)
+#endif
+
+/*
* 2.6.30 API change
* To ensure good performance preferentially use the physical block size
* for proper alignment. The physical size is supposed to be the internal