netlink: Lockless lookup with RCU grace period in socket release

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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>

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Thomas Graf 2015-01-02 23:00:22 +01:00 • committed by David S. Miller

parent f89bd6f87a

commit 21e4902aea

2 changed files with 17 additions and 16 deletions

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32

net/netlink/af_netlink.c

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1

net/netlink/af_netlink.h

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