+/* taken from osc_unpackmd() */
+static int echo_alloc_memmd(struct echo_device *ed,
+ struct lov_stripe_md **lsmp)
+{
+ int lsm_size;
+
+ ENTRY;
+
+ /* If export is lov/osc then use their obd method */
+ if (ed->ed_next != NULL)
+ return obd_alloc_memmd(ed->ed_ec->ec_exp, lsmp);
+ /* OFD has no unpackmd method, do everything here */
+ lsm_size = lov_stripe_md_size(1);
+
+ LASSERT(*lsmp == NULL);
+ OBD_ALLOC(*lsmp, lsm_size);
+ if (*lsmp == NULL)
+ RETURN(-ENOMEM);
+
+ OBD_ALLOC((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
+ if ((*lsmp)->lsm_oinfo[0] == NULL) {
+ OBD_FREE(*lsmp, lsm_size);
+ RETURN(-ENOMEM);
+ }
+
+ loi_init((*lsmp)->lsm_oinfo[0]);
+ (*lsmp)->lsm_maxbytes = LUSTRE_STRIPE_MAXBYTES;
+
+ RETURN(lsm_size);
+}
+
+static int echo_free_memmd(struct echo_device *ed, struct lov_stripe_md **lsmp)
+{
+ int lsm_size;
+
+ ENTRY;
+
+ /* If export is lov/osc then use their obd method */
+ if (ed->ed_next != NULL)
+ return obd_free_memmd(ed->ed_ec->ec_exp, lsmp);
+ /* OFD has no unpackmd method, do everything here */
+ lsm_size = lov_stripe_md_size(1);
+
+ LASSERT(*lsmp != NULL);
+ OBD_FREE((*lsmp)->lsm_oinfo[0], sizeof(struct lov_oinfo));
+ OBD_FREE(*lsmp, lsm_size);
+ *lsmp = NULL;
+ RETURN(0);
+}
+