diff options
Diffstat (limited to 'net/core/net_namespace.c')
| -rw-r--r-- | net/core/net_namespace.c | 21 |
1 files changed, 17 insertions, 4 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index 2c2eb1b629b1..1fe58167d39a 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -37,6 +37,8 @@ struct net init_net = { }; EXPORT_SYMBOL(init_net); +static bool init_net_initialized; + #define INITIAL_NET_GEN_PTRS 13 /* +1 for len +2 for rcu_head */ static unsigned int max_gen_ptrs = INITIAL_NET_GEN_PTRS; @@ -750,6 +752,8 @@ static int __init net_ns_init(void) if (setup_net(&init_net, &init_user_ns)) panic("Could not setup the initial network namespace"); + init_net_initialized = true; + rtnl_lock(); list_add_tail_rcu(&init_net.list, &net_namespace_list); rtnl_unlock(); @@ -811,15 +815,24 @@ static void __unregister_pernet_operations(struct pernet_operations *ops) static int __register_pernet_operations(struct list_head *list, struct pernet_operations *ops) { + if (!init_net_initialized) { + list_add_tail(&ops->list, list); + return 0; + } + return ops_init(ops, &init_net); } static void __unregister_pernet_operations(struct pernet_operations *ops) { - LIST_HEAD(net_exit_list); - list_add(&init_net.exit_list, &net_exit_list); - ops_exit_list(ops, &net_exit_list); - ops_free_list(ops, &net_exit_list); + if (!init_net_initialized) { + list_del(&ops->list); + } else { + LIST_HEAD(net_exit_list); + list_add(&init_net.exit_list, &net_exit_list); + ops_exit_list(ops, &net_exit_list); + ops_free_list(ops, &net_exit_list); + } } #endif /* CONFIG_NET_NS */ |