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authorPavel Emelyanov <xemul@openvz.org>2007-11-01 00:42:43 -0700
committerDavid S. Miller <davem@davemloft.net>2007-11-01 00:42:43 -0700
commit1dba323b3f92cf4a475236763b0373cb7d49395d (patch)
tree3f5463199c8957d3a94710d01380fc2f94d551a1
parent6257ff2177ff02d7f260a7a501876aa41cb9a9f6 (diff)
[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>
-rw-r--r--net/core/net_namespace.c23
1 files changed, 11 insertions, 12 deletions
diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c
index 662e6ea1cec..4e52921ade0 100644
--- a/net/core/net_namespace.c
+++ b/net/core/net_namespace.c
@@ -187,29 +187,28 @@ static int register_pernet_operations(struct list_head *list,
struct net *net, *undo_net;
int error;
- error = 0;
list_add_tail(&ops->list, list);
- for_each_net(net) {
- if (ops->init) {
+ if (ops->init) {
+ for_each_net(net) {
error = ops->init(net);
if (error)
goto out_undo;
}
}
-out:
- return error;
+ return 0;
out_undo:
/* If I have an error cleanup all namespaces I initialized */
list_del(&ops->list);
- for_each_net(undo_net) {
- if (undo_net == net)
- goto undone;
- if (ops->exit)
+ if (ops->exit) {
+ for_each_net(undo_net) {
+ if (undo_net == net)
+ goto undone;
ops->exit(undo_net);
+ }
}
undone:
- goto out;
+ return error;
}
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;
list_del(&ops->list);
- for_each_net(net)
- if (ops->exit)
+ if (ops->exit)
+ for_each_net(net)
ops->exit(net);
}