summaryrefslogtreecommitdiff
path: root/net
diff options
context:
space:
mode:
authorxeb@mail.ru <xeb@mail.ru>2012-08-24 01:07:38 +0000
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-10-02 09:47:22 -0700
commit928863a39f0ee47af97e7e17b909334dcb06cf1e (patch)
tree50912928ba0d92029764aa2eefab739f91dfc0f0 /net
parentf8df5b8a9dec89726e6bf8a2073c72a533c6d0c5 (diff)
l2tp: avoid to use synchronize_rcu in tunnel free function
[ Upstream commit 99469c32f79a32d8481f87be0d3c66dad286f4ec ] Avoid to use synchronize_rcu in l2tp_tunnel_free because context may be atomic. Signed-off-by: Dmitry Kozlov <xeb@mail.ru> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'net')
-rw-r--r--net/l2tp/l2tp_core.c3
-rw-r--r--net/l2tp/l2tp_core.h1
2 files changed, 2 insertions, 2 deletions
diff --git a/net/l2tp/l2tp_core.c b/net/l2tp/l2tp_core.c
index 71c292e3e039..6a3d680c74fc 100644
--- a/net/l2tp/l2tp_core.c
+++ b/net/l2tp/l2tp_core.c
@@ -1252,11 +1252,10 @@ static void l2tp_tunnel_free(struct l2tp_tunnel *tunnel)
/* Remove from tunnel list */
spin_lock_bh(&pn->l2tp_tunnel_list_lock);
list_del_rcu(&tunnel->list);
+ kfree_rcu(tunnel, rcu);
spin_unlock_bh(&pn->l2tp_tunnel_list_lock);
- synchronize_rcu();
atomic_dec(&l2tp_tunnel_count);
- kfree(tunnel);
}
/* Create a socket for the tunnel, if one isn't set up by
diff --git a/net/l2tp/l2tp_core.h b/net/l2tp/l2tp_core.h
index a16a48e79fab..439379484bfc 100644
--- a/net/l2tp/l2tp_core.h
+++ b/net/l2tp/l2tp_core.h
@@ -157,6 +157,7 @@ struct l2tp_tunnel_cfg {
struct l2tp_tunnel {
int magic; /* Should be L2TP_TUNNEL_MAGIC */
+ struct rcu_head rcu;
rwlock_t hlist_lock; /* protect session_hlist */
struct hlist_head session_hlist[L2TP_HASH_SIZE];
/* hashed list of sessions,