test_urcu_lfs: test for the proper pointer

We should use "if (snode)" instead of "if (node)" in case of
the struct cds_lfs_node_rcu is not the first field of struct node.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/tests/test_urcu_lfs.c b/tests/test_urcu_lfs.c
index 5886ce86de50c1ab2c25c61a172d895fa4a33a53..99d1b4c9dfb426179b81e6c371623541f018c445 100644 (file)
--- a/tests/test_urcu_lfs.c
+++ b/tests/test_urcu_lfs.c
@@ -242,13 +242,14 @@ void *thr_dequeuer(void *_count)
 
        for (;;) {
                struct cds_lfs_node_rcu *snode;
-               struct test *node;
 
                rcu_read_lock();
                snode = cds_lfs_pop_rcu(&s);
-               node = caa_container_of(snode, struct test, list);
                rcu_read_unlock();
-               if (node) {
+               if (snode) {
+                       struct test *node;
+
+                       node = caa_container_of(snode, struct test, list);
                        call_rcu(&node->rcu, free_node_cb);
                        URCU_TLS(nr_successful_dequeues)++;
                }