From e7511f560f5499c664c1ba9181c76044e2af578d Mon Sep 17 00:00:00 2001 From: Cong Wang Date: Sat, 2 May 2020 22:22:20 -0700 Subject: bonding: remove useless stats_lock_key After commit b3e80d44f5b1 ("bonding: fix lockdep warning in bond_get_stats()") the dynamic key is no longer necessary, as we compute nest level at run-time. So, we can just remove it to save some lockdep key entries. Test commands: ip link add bond0 type bond ip link add bond1 type bond ip link set bond0 master bond1 ip link set bond0 nomaster ip link set bond1 master bond0 Reported-and-tested-by: syzbot+aaa6fa4949cc5d9b7b25@syzkaller.appspotmail.com Cc: Dmitry Vyukov Acked-by: Taehee Yoo Signed-off-by: Cong Wang Signed-off-by: David S. Miller --- drivers/net/bonding/bond_main.c | 3 --- 1 file changed, 3 deletions(-) (limited to 'drivers/net/bonding') diff --git a/drivers/net/bonding/bond_main.c b/drivers/net/bonding/bond_main.c index d01871321d22..baa93191dfdd 100644 --- a/drivers/net/bonding/bond_main.c +++ b/drivers/net/bonding/bond_main.c @@ -4491,7 +4491,6 @@ static void bond_uninit(struct net_device *bond_dev) list_del(&bond->bond_list); - lockdep_unregister_key(&bond->stats_lock_key); bond_debug_unregister(bond); } @@ -4896,8 +4895,6 @@ static int bond_init(struct net_device *bond_dev) return -ENOMEM; spin_lock_init(&bond->stats_lock); - lockdep_register_key(&bond->stats_lock_key); - lockdep_set_class(&bond->stats_lock, &bond->stats_lock_key); netdev_lockdep_set_classes(bond_dev); list_add_tail(&bond->bond_list, &bn->dev_list); -- cgit v1.2.3