Document urcu-defer usage with dlclose()

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>

diff --git a/README b/README
index e1ce893737acd0d4d79260462f6383ff45a05c42..72e73de93f0244cb232f5c4dc7102c4c567db965 100644 (file)
--- a/README
+++ b/README
@@ -107,6 +107,9 @@ Usage of liburcu-defer
        * Provides defer_rcu_ratelimit() primitive, which acts just like
          defer_rcu(), but takes an additional rate limiter callback forcing
          synchronized callback execution of the limiter returns non-zero.
+       * Requires that rcu_defer_barrier() must be called in library destructor
+         if a library queues callbacks and is expected to be unloaded with
+         dlclose().
 
 Being careful with signals