X-Git-Url: https://git.liburcu.org/?p=urcu.git;a=blobdiff_plain;f=urcu%2Fstatic%2Frculfstack.h;h=ed6b0d4a6890d7d0f4205106ff5db09627c9f3f1;hp=ba26231e87206371965c653189596137abb818cd;hb=7618919ae496bda84a2efa4f2ad0abe569892a9e;hpb=4a0b347ad068737b5ab0565cd4506f2f3b21e1f2

diff --git a/urcu/static/rculfstack.h b/urcu/static/rculfstack.h
index ba26231..ed6b0d4 100644
--- a/urcu/static/rculfstack.h
+++ b/urcu/static/rculfstack.h
@@ -63,7 +63,7 @@ void _cds_lfs_push_rcu(struct cds_lfs_stack_rcu *s, struct cds_lfs_node_rcu *nod
 }
 
 /*
- * Should be called under rcu read-side lock.
+ * Acts as a RCU reader.
  *
  * The caller must wait for a grace period to pass before freeing the returned
  * node or modifying the cds_lfs_node_rcu structure.
@@ -76,18 +76,22 @@ _cds_lfs_pop_rcu(struct cds_lfs_stack_rcu *s)
 	for (;;) {
 		struct cds_lfs_node_rcu *head;
 
+		rcu_read_lock();
 		head = rcu_dereference(s->head);
 		if (head) {
 			struct cds_lfs_node_rcu *next = rcu_dereference(head->next);
 
 			if (uatomic_cmpxchg(&s->head, head, next) == head) {
+				rcu_read_unlock();
 				return head;
 			} else {
 				/* Concurrent modification. Retry. */
+				rcu_read_unlock();
 				continue;
 			}
 		} else {
 			/* Empty stack */
+			rcu_read_unlock();
 			return NULL;
 		}
 	}