diff options
| -rw-r--r-- | sys/netgraph/ng_base.c | 13 |
1 files changed, 5 insertions, 8 deletions
diff --git a/sys/netgraph/ng_base.c b/sys/netgraph/ng_base.c index 588f3d2..f9169ce 100644 --- a/sys/netgraph/ng_base.c +++ b/sys/netgraph/ng_base.c @@ -770,11 +770,9 @@ ng_unref_node(node_p node) return (0); } - do { - v = node->nd_refs - 1; - } while (! atomic_cmpset_int(&node->nd_refs, v + 1, v)); + v = atomic_fetchadd_int(&node->nd_refs, -1); - if (v == 0) { /* we were the last */ + if (v == 1) { /* we were the last */ mtx_lock(&ng_namehash_mtx); node->nd_type->refs--; /* XXX maybe should get types lock? */ @@ -788,7 +786,7 @@ ng_unref_node(node_p node) mtx_destroy(&node->nd_input_queue.q_mtx); NG_FREE_NODE(node); } - return (v); + return (v - 1); } /************************************************************************ @@ -959,9 +957,8 @@ ng_unref_hook(hook_p hook) if (hook == &ng_deadhook) { return; } - do { - v = hook->hk_refs; - } while (! atomic_cmpset_int(&hook->hk_refs, v, v - 1)); + + v = atomic_fetchadd_int(&hook->hk_refs, -1); if (v == 1) { /* we were the last */ if (_NG_HOOK_NODE(hook)) /* it'll probably be ng_deadnode */ |
