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-rw-r--r--net/ipv4/inetpeer.c16
1 files changed, 12 insertions, 4 deletions
diff --git a/net/ipv4/inetpeer.c b/net/ipv4/inetpeer.c
index d4d61b694fab..dfba343b2509 100644
--- a/net/ipv4/inetpeer.c
+++ b/net/ipv4/inetpeer.c
@@ -560,6 +560,17 @@ bool inet_peer_xrlim_allow(struct inet_peer *peer, int timeout)
}
EXPORT_SYMBOL(inet_peer_xrlim_allow);
+static void inetpeer_inval_rcu(struct rcu_head *head)
+{
+ struct inet_peer *p = container_of(head, struct inet_peer, gc_rcu);
+
+ spin_lock_bh(&gc_lock);
+ list_add_tail(&p->gc_list, &gc_list);
+ spin_unlock_bh(&gc_lock);
+
+ schedule_delayed_work(&gc_work, gc_delay);
+}
+
void inetpeer_invalidate_tree(int family)
{
struct inet_peer *old, *new, *prev;
@@ -576,10 +587,7 @@ void inetpeer_invalidate_tree(int family)
prev = cmpxchg(&base->root, old, new);
if (prev == old) {
base->total = 0;
- spin_lock(&gc_lock);
- list_add_tail(&prev->gc_list, &gc_list);
- spin_unlock(&gc_lock);
- schedule_delayed_work(&gc_work, gc_delay);
+ call_rcu(&prev->gc_rcu, inetpeer_inval_rcu);
}
out:
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