X-Git-Url: https://git.liburcu.org/?a=blobdiff_plain;f=src%2Furcu-call-rcu-impl.h;h=530abfe8bb7e3dc01f23c56e1a6144d4e807a71a;hb=17a8f206ce5461b5a0a551171493b5b63e592f86;hp=b6ec6ba3913fd1546a39485a3764a7488e7112bb;hpb=ce28e67a534dcf0b68ccad2218e5a2e552e6e469;p=urcu.git

diff --git a/src/urcu-call-rcu-impl.h b/src/urcu-call-rcu-impl.h
index b6ec6ba..530abfe 100644
--- a/src/urcu-call-rcu-impl.h
+++ b/src/urcu-call-rcu-impl.h
@@ -772,9 +772,13 @@ void call_rcu_data_free(struct call_rcu_data *crdp)
 		while ((uatomic_read(&crdp->flags) & URCU_CALL_RCU_STOPPED) == 0)
 			(void) poll(NULL, 0, 1);
 	}
+	call_rcu_lock(&call_rcu_mutex);
 	if (!cds_wfcq_empty(&crdp->cbs_head, &crdp->cbs_tail)) {
-		/* Create default call rcu data if need be */
+		call_rcu_unlock(&call_rcu_mutex);
+		/* Create default call rcu data if need be. */
+		/* CBs queued here will be handed to the default list. */
 		(void) get_default_call_rcu_data();
+		call_rcu_lock(&call_rcu_mutex);
 		__cds_wfcq_splice_blocking(&default_call_rcu_data->cbs_head,
 			&default_call_rcu_data->cbs_tail,
 			&crdp->cbs_head, &crdp->cbs_tail);
@@ -783,7 +787,6 @@ void call_rcu_data_free(struct call_rcu_data *crdp)
 		wake_call_rcu_thread(default_call_rcu_data);
 	}
 
-	call_rcu_lock(&call_rcu_mutex);
 	cds_list_del(&crdp->list);
 	call_rcu_unlock(&call_rcu_mutex);
 
@@ -1050,7 +1053,7 @@ end:
 URCU_ATTR_ALIAS(urcu_stringify(urcu_register_rculfhash_atfork))
 void alias_urcu_register_rculfhash_atfork();
 
-void urcu_unregister_rculfhash_atfork(struct urcu_atfork *atfork)
+void urcu_unregister_rculfhash_atfork(struct urcu_atfork *atfork __attribute__((unused)))
 {
 	call_rcu_lock(&call_rcu_mutex);
 	if (--registered_rculfhash_atfork_refcount)