* kernel patch */
#ifdef __KERNEL__
#include <linux/lustre_version.h>
-#define LUSTRE_MIN_VERSION 23
+#define LUSTRE_MIN_VERSION 21
#define LUSTRE_MAX_VERSION 23
#if (LUSTRE_KERNEL_VERSION < LUSTRE_MIN_VERSION)
# error Cannot continue: Your Lustre kernel patch is older than the sources