CMM_STORE_SHARED(elem->prev->next, elem->next);
}
+/*
+ * Get first element from a RCU hlist. Assumes the hlist is not empty.
+ * This must be done while rcu_read_lock() is held.
+ */
+#define cds_hlist_first_rcu(ptr, type) \
+ rcu_dereference((ptr)->next)
+
+/*
+ * Get first entry from a RCU hlist. Assumes the hlist is not empty.
+ * This must be done while rcu_read_lock() is held.
+ */
+#define cds_hlist_first_entry_rcu(ptr, type, member) \
+ cds_hlist_entry(rcu_dereference((ptr)->next), type, member)
+
/*
* Iterate through elements of the list.
* This must be done while rcu_read_lock() is held.