X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=urcu%2Frculfstack-static.h;h=3ce24c55d2ddcf385f9e90006a016b305b557766;hb=4fc06b7fbadc933271cf1b75e03a923486f7247b;hp=8eae35d1bc0d2c9fc12955d6c5185f3bcb1ecfbb;hpb=b6a37eaca5f072e7bba90a2562b7f2ac238fe23b;p=urcu.git

diff --git a/urcu/rculfstack-static.h b/urcu/rculfstack-static.h
index 8eae35d..3ce24c5 100644
--- a/urcu/rculfstack-static.h
+++ b/urcu/rculfstack-static.h
@@ -44,24 +44,19 @@ void _rcu_lfs_init(struct rcu_lfs_stack *s)
 
 void _rcu_lfs_push(struct rcu_lfs_stack *s, struct rcu_lfs_node *node)
 {
+	struct rcu_lfs_node *head = NULL;
+
 	for (;;) {
-		struct rcu_lfs_node *head;
+		struct rcu_lfs_node *old_head = head;
 
-		rcu_read_lock();
-		head = rcu_dereference(s->head);
 		node->next = head;
 		/*
 		 * uatomic_cmpxchg() implicit memory barrier orders earlier
 		 * stores to node before publication.
 		 */
-		if (uatomic_cmpxchg(&s->head, head, node) == head) {
-			rcu_read_unlock();
-			return;
-		} else {
-			/* Failure to prepend. Retry. */
-			rcu_read_unlock();
-			continue;
-		}
+		head = uatomic_cmpxchg(&s->head, old_head, node);
+		if (old_head == head)
+			break;
 	}
 }