X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=lib%2Flibrte_ring%2Frte_ring_generic.h;fp=lib%2Flibrte_ring%2Frte_ring_generic.h;h=953cdbbd5eb15303b46aefc1493f31bd90aaf85e;hb=ce2f72a24eaa89ff08fd64742c9425f17f42345c;hp=ea7dbe5b9c07b255077ceec02ec0e0cccfbe0add;hpb=5edab9b0e790c4e369c46998a9e56206a044297b;p=deb_dpdk.git

diff --git a/lib/librte_ring/rte_ring_generic.h b/lib/librte_ring/rte_ring_generic.h
index ea7dbe5b..953cdbbd 100644
--- a/lib/librte_ring/rte_ring_generic.h
+++ b/lib/librte_ring/rte_ring_generic.h
@@ -158,11 +158,14 @@ __rte_ring_move_cons_head(struct rte_ring *r, unsigned int is_sc,
 			return 0;
 
 		*new_head = *old_head + n;
-		if (is_sc)
-			r->cons.head = *new_head, success = 1;
-		else
+		if (is_sc) {
+			r->cons.head = *new_head;
+			rte_smp_rmb();
+			success = 1;
+		} else {
 			success = rte_atomic32_cmpset(&r->cons.head, *old_head,
 					*new_head);
+		}
 	} while (unlikely(success == 0));
 	return n;
 }