Exit methods calls inet_frags_exit_net() with global ip6_frags
as argument. So, after we make the pernet_operations async,
a pair of exit methods may be called to iterate this hash table.
Since there is inet_frag_worker(), which already may work
in parallel with inet_frags_exit_net(), and it can make the same
cleanup, that inet_frags_exit_net() does, it's safe. So we may
mark these pernet_operations as async.
Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
---
net/ipv6/reassembly.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index afbc000ad4f2..b5da69c83123 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -733,6 +733,7 @@ static void __net_exit ipv6_frags_exit_net(struct net *net)
static struct pernet_operations ip6_frags_ops = {
.init = ipv6_frags_init_net,
.exit = ipv6_frags_exit_net,
+ .async = true,
};
int __init ipv6_frag_init(void)
