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tipc: tipc: convert node list and node hlist to RCU lists

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Convert tipc_node_list list and node_htable hash list to RCU lists.
On read side, the two lists are protected with RCU read lock, and
on update side, node_list_lock is applied to them.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Reviewed-by: Erik Hugne <erik.hugne@ericsson.com>
Reviewed-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ying Xue
2014-03-27 12:54:37 +08:00
committed by David S. Miller
parent 46651c59c4
commit 6c7a762e70
4 changed files with 31 additions and 21 deletions
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6
net/tipc/name_distr.c
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@@ -133,8 +133,8 @@ static void named_cluster_distribute(struct sk_buff *buf)
struct tipc_node *n_ptr;
struct tipc_link *l_ptr;
read_lock_bh(&tipc_net_lock);
list_for_each_entry(n_ptr, &tipc_node_list, list) {
rcu_read_lock();
list_for_each_entry_rcu(n_ptr, &tipc_node_list, list) {
spin_lock_bh(&n_ptr->lock);
l_ptr = n_ptr->active_links[n_ptr->addr & 1];
if (l_ptr) {
@@ -148,7 +148,7 @@ static void named_cluster_distribute(struct sk_buff *buf)
}
spin_unlock_bh(&n_ptr->lock);
}
read_unlock_bh(&tipc_net_lock);
rcu_read_unlock();
kfree_skb(buf);
}