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Subject[PATCH 14/23] net: Add net namespaces into ns_idr
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Date
Now they are exposed in /proc/namespace/ directory.

We already wait RCU grace period in cleanup_net()
before pernet_operations exit, so ns_idr_unregister()
works as expected.

Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com>
---
net/core/net_namespace.c | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)

diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 5f658cbedd34..f78655a670e5 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -701,14 +701,24 @@ EXPORT_SYMBOL_GPL(get_net_ns_by_pid);

static __net_init int net_ns_net_init(struct net *net)
{
+ int ret;
#ifdef CONFIG_NET_NS
net->ns.ops = &netns_operations;
#endif
- return ns_alloc_inum(&net->ns);
+ ret = ns_alloc_inum(&net->ns);
+ if (ret)
+ return ret;
+
+ ret = ns_idr_register(&net->ns);
+ if (ret < 0)
+ ns_free_inum(&net->ns);
+
+ return ret;
}

static __net_exit void net_ns_net_exit(struct net *net)
{
+ ns_idr_unregister(&net->ns);
ns_free_inum(&net->ns);
}


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