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| author |   Eric Dumazet <edumazet@google.com> | 2014-07-15 06:56:55 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2014-07-15 17:49:42 -0700 |
| commit | 4740d6382790077f22c606d03804f5d9f15b90d7 (patch) | |
| tree | 4f607b2f834ba4f547312136316d606d62fcdac0 /drivers/net/bonding/bonding.h | |
| parent | bonding: use rcu_access_pointer() in bonding_show_mii_status() (diff) | |
| download | linux-dev-4740d6382790077f22c606d03804f5d9f15b90d7.tar.xz linux-dev-4740d6382790077f22c606d03804f5d9f15b90d7.zip | |
bonding: add proper __rcu annotation for curr_active_slave
RCU was added to bonding in linux-3.12 but lacked proper sparse annotations.
Using __rcu annotation actually helps to spot all accesses to bond->curr_active_slave
are correctly protected, with LOCKDEP support.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Veaceslav Falico <vfalico@gmail.com>
Reviewed-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to '')
| -rw-r--r-- | drivers/net/bonding/bonding.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/net/bonding/bonding.h b/drivers/net/bonding/bonding.h index 713e2a99c661..d03d2ae4d3af 100644 --- a/drivers/net/bonding/bonding.h +++ b/drivers/net/bonding/bonding.h @@ -194,7 +194,7 @@ struct slave { */ struct bonding { struct net_device *dev; /* first - useful for panic debug */ - struct slave *curr_active_slave; + struct slave __rcu *curr_active_slave; struct slave *current_arp_slave; struct slave *primary_slave; bool force_primary; @@ -232,6 +232,10 @@ struct bonding { #define bond_slave_get_rtnl(dev) \ ((struct slave *) rtnl_dereference(dev->rx_handler_data)) +#define bond_deref_active_protected(bond) \ + rcu_dereference_protected(bond->curr_active_slave, \ + lockdep_is_held(&bond->curr_slave_lock)) + struct bond_vlan_tag { __be16 vlan_proto; unsigned short vlan_id; |