[PATCH v2 02/31] net: Cleanup copy_net_ns()
From: Kirill Tkhai <hidden>
Date: 2017-11-20 18:32:39
Also in:
lkml
Subsystem:
networking [general], the rest · Maintainers:
"David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Line up destructors actions in the revers order to constructors. Next patches will add more actions, and this will be comfortable, if there is the such order. Signed-off-by: Kirill Tkhai <redacted> --- net/core/net_namespace.c | 20 +++++++++----------- 1 file changed, 9 insertions(+), 11 deletions(-)
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 7ecf71050ffa..2e512965bf42 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c@@ -404,27 +404,25 @@ struct net *copy_net_ns(unsigned long flags, net = net_alloc(); if (!net) { - dec_net_namespaces(ucounts); - return ERR_PTR(-ENOMEM); + rv = -ENOMEM; + goto dec_ucounts; } - + refcount_set(&net->passive, 1); + net->ucounts = ucounts; get_user_ns(user_ns); rv = mutex_lock_killable(&net_mutex); - if (rv < 0) { - net_free(net); - dec_net_namespaces(ucounts); - put_user_ns(user_ns); - return ERR_PTR(rv); - } + if (rv < 0) + goto put_userns; - net->ucounts = ucounts; rv = setup_net(net, user_ns); mutex_unlock(&net_mutex); if (rv < 0) { - dec_net_namespaces(ucounts); +put_userns: put_user_ns(user_ns); net_drop_ns(net); +dec_ucounts: + dec_net_namespaces(ucounts); return ERR_PTR(rv); } return net;