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authorJay Vosburgh <fubar@us.ibm.com>2008-10-30 17:41:15 -0700
committerJeff Garzik <jgarzik@redhat.com>2008-10-31 00:46:04 -0400
commita434e43f3d844192bc23bd7b408bac979c40efe7 (patch)
treec14f191bafc78a1194815e0e9df5223dd52e8d99
parentfba4acda35f3119328bcba28aacefae14245d2bb (diff)
bonding: Clean up resource leaks
This patch reworks the resource free logic performed at the time a bonding device is released. This (a) closes two resource leaks, one for workqueues and one for multicast lists, and (b) improves commonality of code between the "destroy one" and "destroy all" paths by performing final free activity via destructor instead of explicitly (and differently) in each path. "Sean E. Millichamp" <sean@bruenor.org> reported the workqueue leak, and included a different patch. Signed-off-by: Jay Vosburgh <fubar@us.ibm.com> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
-rw-r--r--drivers/net/bonding/bond_main.c49
1 files changed, 31 insertions, 18 deletions
diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c
index 85de1d04d1e..a3efba59eee 100644
--- a/drivers/net/bonding/bond_main.c
+++ b/drivers/net/bonding/bond_main.c
@@ -1979,6 +1979,20 @@ void bond_destroy(struct bonding *bond)
unregister_netdevice(bond->dev);
}
+static void bond_destructor(struct net_device *bond_dev)
+{
+ struct bonding *bond = bond_dev->priv;
+
+ if (bond->wq)
+ destroy_workqueue(bond->wq);
+
+ netif_addr_lock_bh(bond_dev);
+ bond_mc_list_destroy(bond);
+ netif_addr_unlock_bh(bond_dev);
+
+ free_netdev(bond_dev);
+}
+
/*
* First release a slave and than destroy the bond if no more slaves iare left.
* Must be under rtnl_lock when this function is called.
@@ -4553,7 +4567,7 @@ static int bond_init(struct net_device *bond_dev, struct bond_params *params)
bond_set_mode_ops(bond, bond->params.mode);
- bond_dev->destructor = free_netdev;
+ bond_dev->destructor = bond_destructor;
/* Initialize the device options */
bond_dev->tx_queue_len = 0;
@@ -4592,20 +4606,6 @@ static int bond_init(struct net_device *bond_dev, struct bond_params *params)
return 0;
}
-/* De-initialize device specific data.
- * Caller must hold rtnl_lock.
- */
-static void bond_deinit(struct net_device *bond_dev)
-{
- struct bonding *bond = bond_dev->priv;
-
- list_del(&bond->bond_list);
-
-#ifdef CONFIG_PROC_FS
- bond_remove_proc_entry(bond);
-#endif
-}
-
static void bond_work_cancel_all(struct bonding *bond)
{
write_lock_bh(&bond->lock);
@@ -4627,6 +4627,22 @@ static void bond_work_cancel_all(struct bonding *bond)
cancel_delayed_work(&bond->ad_work);
}
+/* De-initialize device specific data.
+ * Caller must hold rtnl_lock.
+ */
+static void bond_deinit(struct net_device *bond_dev)
+{
+ struct bonding *bond = bond_dev->priv;
+
+ list_del(&bond->bond_list);
+
+ bond_work_cancel_all(bond);
+
+#ifdef CONFIG_PROC_FS
+ bond_remove_proc_entry(bond);
+#endif
+}
+
/* Unregister and free all bond devices.
* Caller must hold rtnl_lock.
*/
@@ -4638,9 +4654,6 @@ static void bond_free_all(void)
struct net_device *bond_dev = bond->dev;
bond_work_cancel_all(bond);
- netif_addr_lock_bh(bond_dev);
- bond_mc_list_destroy(bond);
- netif_addr_unlock_bh(bond_dev);
/* Release the bonded slaves */
bond_release_all(bond_dev);
bond_destroy(bond);