netlink: Lockless lookup with RCU grace period in socket release
authorThomas Graf <tgraf@suug.ch>
Fri, 2 Jan 2015 22:00:22 +0000 (23:00 +0100)
committerDavid S. Miller <davem@davemloft.net>
Sat, 3 Jan 2015 19:32:57 +0000 (14:32 -0500)
commit21e4902aea80ef35afc00ee8d2abdea4f519b7f7
tree8c1d2761c3959356151eed7bb677df633d64c0dd
parentf89bd6f87a53ce5a7d60662429591ebac2745c10
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>
net/netlink/af_netlink.c
net/netlink/af_netlink.h