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| author | Thomas Graf <tgraf@suug.ch> | 2015-01-02 23:00:22 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2015-01-03 14:32:57 -0500 |
| commit | 21e4902aea80ef35afc00ee8d2abdea4f519b7f7 (patch) | |
| tree | 8c1d2761c3959356151eed7bb677df633d64c0dd /net/netlink/af_netlink.h | |
| parent | f89bd6f87a53ce5a7d60662429591ebac2745c10 (diff) | |
| download | linux-21e4902aea80ef35afc00ee8d2abdea4f519b7f7.tar.gz linux-21e4902aea80ef35afc00ee8d2abdea4f519b7f7.tar.bz2 linux-21e4902aea80ef35afc00ee8d2abdea4f519b7f7.zip | |
netlink: Lockless lookup with RCU grace period in socket release
Defers the release of the socket reference using call_rcu() to
allow using an RCU read-side protected call to rhashtable_lookup()
This restores behaviour and performance gains as previously
introduced by e341694 ("netlink: Convert netlink_lookup() to use
RCU protected hash table") without the side effect of severely
delayed socket destruction.
Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/netlink/af_netlink.h')
| -rw-r--r-- | net/netlink/af_netlink.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/net/netlink/af_netlink.h b/net/netlink/af_netlink.h index f123a88496f8..fd96fa76202a 100644 --- a/net/netlink/af_netlink.h +++ b/net/netlink/af_netlink.h @@ -50,6 +50,7 @@ struct netlink_sock { #endif /* CONFIG_NETLINK_MMAP */ struct rhash_head node; + struct rcu_head rcu; }; static inline struct netlink_sock *nlk_sk(struct sock *sk) |