[NET]: Relax the reference counting of init_net_ns
When the CONFIG_NET_NS is n there's no need in refcounting the initial net namespace. So relax this code by making a stupid stubs for the "n" case. Signed-off-by: Pavel Emelyanov <xemul@openvz.org> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
parent
1dba323b3f
commit
d46557955f
|
@ -51,13 +51,12 @@ static inline struct net *copy_net_ns(unsigned long flags, struct net *net_ns)
|
|||
}
|
||||
#endif
|
||||
|
||||
#ifdef CONFIG_NET_NS
|
||||
extern void __put_net(struct net *net);
|
||||
|
||||
static inline struct net *get_net(struct net *net)
|
||||
{
|
||||
#ifdef CONFIG_NET
|
||||
atomic_inc(&net->count);
|
||||
#endif
|
||||
return net;
|
||||
}
|
||||
|
||||
|
@ -75,26 +74,44 @@ static inline struct net *maybe_get_net(struct net *net)
|
|||
|
||||
static inline void put_net(struct net *net)
|
||||
{
|
||||
#ifdef CONFIG_NET
|
||||
if (atomic_dec_and_test(&net->count))
|
||||
__put_net(net);
|
||||
#endif
|
||||
}
|
||||
|
||||
static inline struct net *hold_net(struct net *net)
|
||||
{
|
||||
#ifdef CONFIG_NET
|
||||
atomic_inc(&net->use_count);
|
||||
#endif
|
||||
return net;
|
||||
}
|
||||
|
||||
static inline void release_net(struct net *net)
|
||||
{
|
||||
#ifdef CONFIG_NET
|
||||
atomic_dec(&net->use_count);
|
||||
#endif
|
||||
}
|
||||
#else
|
||||
static inline struct net *get_net(struct net *net)
|
||||
{
|
||||
return net;
|
||||
}
|
||||
|
||||
static inline void put_net(struct net *net)
|
||||
{
|
||||
}
|
||||
|
||||
static inline struct net *hold_net(struct net *net)
|
||||
{
|
||||
return net;
|
||||
}
|
||||
|
||||
static inline void release_net(struct net *net)
|
||||
{
|
||||
}
|
||||
|
||||
static inline struct net *maybe_get_net(struct net *net)
|
||||
{
|
||||
return net;
|
||||
}
|
||||
#endif
|
||||
|
||||
#define for_each_net(VAR) \
|
||||
list_for_each_entry(VAR, &net_namespace_list, list)
|
||||
|
|
Loading…
Reference in a new issue