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[NETNS]: Make the init/exit hooks checks outside the loop 

When the new pernet something (subsys, device or operations) is
being registered, the init callback is to be called for each
namespace, that currently exitst in the system. During the
unregister, the same is to be done with the exit callback.

However, not every pernet something has both calls, but the
check for the appropriate pointer to be not NULL is performed
inside the for_each_net() loop.

This is (at least) strange, so tune this.

Signed-off-by: Pavel Emelyanov <xemul@openvz.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Pavel Emelyanov 2007-11-01 00:42:43 -07:00 committed by David S. Miller
parent 6257ff2177
commit 1dba323b3f
1 changed files with 11 additions and 12 deletions
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23
net/core/net_namespace.c
View File

@ -187,29 +187,28 @@ static int register_pernet_operations(struct list_head *list,
struct net *net, *undo_net; struct net *net, *undo_net;
int error; int error;
error = 0;
list_add_tail(&ops->list, list); list_add_tail(&ops->list, list);
for_each_net(net) { if (ops->init) {
if (ops->init) { for_each_net(net) {
error = ops->init(net); error = ops->init(net);
if (error) if (error)
goto out_undo; goto out_undo;
} }
} }
out: return 0;
return error;
out_undo: out_undo:
/* If I have an error cleanup all namespaces I initialized */ /* If I have an error cleanup all namespaces I initialized */
list_del(&ops->list); list_del(&ops->list);
for_each_net(undo_net) { if (ops->exit) {
if (undo_net == net) for_each_net(undo_net) {
goto undone; if (undo_net == net)
if (ops->exit) goto undone;
ops->exit(undo_net); ops->exit(undo_net);
}
} }
undone: undone:
goto out; return error;
} }
static void unregister_pernet_operations(struct pernet_operations *ops) static void unregister_pernet_operations(struct pernet_operations *ops)
@ -217,8 +216,8 @@ static void unregister_pernet_operations(struct pernet_operations *ops)
struct net *net; struct net *net;
list_del(&ops->list); list_del(&ops->list);
for_each_net(net) if (ops->exit)
if (ops->exit) for_each_net(net)
ops->exit(net); ops->exit(net);
} }