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authorThomas Graf <tgraf@suug.ch>2015-01-03 01:00:22 +0300
committerDavid S. Miller <davem@davemloft.net>2015-01-03 22:32:57 +0300
commit21e4902aea80ef35afc00ee8d2abdea4f519b7f7 (patch)
tree8c1d2761c3959356151eed7bb677df633d64c0dd /net/netlink/af_netlink.h
parentf89bd6f87a53ce5a7d60662429591ebac2745c10 (diff)
downloadlinux-21e4902aea80ef35afc00ee8d2abdea4f519b7f7.tar.xz
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.h1
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)