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bonding: switch bond_net_exit() to batch mode

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cleanup_net() is competing with other rtnl users.

Batching bond_net_exit() factorizes all rtnl acquistions
to a single one, giving chance for cleanup_net()
to progress much faster, holding rtnl a bit longer.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Jay Vosburgh <j.vosburgh@gmail.com>
Cc: Veaceslav Falico <vfalico@gmail.com>
Cc: Andy Gospodarek <andy@greyhouse.net>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2022-02-07 20:50:37 -08:00 committed by Jakub Kicinski
parent ef0de6696c
commit 16a41634ac
2 changed files with 19 additions and 9 deletions
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27
drivers/net/bonding/bond_main.c
View File

@ -6048,27 +6048,38 @@ static int __net_init bond_net_init(struct net *net)
return 0;
}
static void __net_exit bond_net_exit(struct net *net)
static void __net_exit bond_net_exit_batch(struct list_head *net_list)
{
struct bond_net *bn = net_generic(net, bond_net_id);
struct bonding *bond, *tmp_bond;
struct bond_net *bn;
struct net *net;
LIST_HEAD(list);
bond_destroy_sysfs(bn);
list_for_each_entry(net, net_list, exit_list) {
bn = net_generic(net, bond_net_id);
bond_destroy_sysfs(bn);
}
/* Kill off any bonds created after unregistering bond rtnl ops */
rtnl_lock();
list_for_each_entry_safe(bond, tmp_bond, &bn->dev_list, bond_list)
unregister_netdevice_queue(bond->dev, &list);
list_for_each_entry(net, net_list, exit_list) {
struct bonding *bond, *tmp_bond;
bn = net_generic(net, bond_net_id);
list_for_each_entry_safe(bond, tmp_bond, &bn->dev_list, bond_list)
unregister_netdevice_queue(bond->dev, &list);
}
unregister_netdevice_many(&list);
rtnl_unlock();
bond_destroy_proc_dir(bn);
list_for_each_entry(net, net_list, exit_list) {
bn = net_generic(net, bond_net_id);
bond_destroy_proc_dir(bn);
}
}
static struct pernet_operations bond_net_ops = {
.init = bond_net_init,
.exit = bond_net_exit,
.exit_batch = bond_net_exit_batch,
.id = &bond_net_id,
.size = sizeof(struct bond_net),
};

1
drivers/net/bonding/bond_procfs.c
View File

@ -307,7 +307,6 @@ void __net_init bond_create_proc_dir(struct bond_net *bn)
}
/* Destroy the bonding directory under /proc/net, if empty.
* Caller must hold rtnl_lock.
*/
void __net_exit bond_destroy_proc_dir(struct bond_net *bn)
{