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authorKirill Tkhai <ktkhai@virtuozzo.com>2018-01-16 12:31:54 +0300
committerDavid S. Miller <davem@davemloft.net>2018-01-17 15:42:35 -0500
commit42157277af17d5c05946c700eb03877d60760d3c (patch)
treee40d3af152a62455f84d43235b6a5132694ae8b9 /net/core/net_namespace.c
parent0c06bea919f3289368a023d1a62a1bc319617fa3 (diff)
net: Remove spinlock from get_net_ns_by_id()
idr_find() is safe under rcu_read_lock() and maybe_get_net() guarantees that net is alive. Signed-off-by: Kirill Tkhai <ktkhai@virtuozzo.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/net_namespace.c')
-rw-r--r--net/core/net_namespace.c2
1 files changed, 0 insertions, 2 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 3c77d84ad60d..1ccb953b3b09 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -273,11 +273,9 @@ struct net *get_net_ns_by_id(struct net *net, int id)
return NULL;
rcu_read_lock();
- spin_lock_bh(&net->nsid_lock);
peer = idr_find(&net->netns_ids, id);
if (peer)
peer = maybe_get_net(peer);
- spin_unlock_bh(&net->nsid_lock);
rcu_read_unlock();
return peer;