tree 06d8a085701546be48ac104fd4f2413a6371180c
parent 04dc7f6be3a7b308f8545bb45772c9fb75f71aca
author Eric W. Biederman <ebiederm@xmission.com> 1259807345 +0000
committer David S. Miller <davem@davemloft.net> 1259871723 -0800

net: Allow xfrm_user_net_exit to batch efficiently.

xfrm.nlsk is provided by the xfrm_user module and is access via rcu from
other parts of the xfrm code.  Add xfrm.nlsk_stash a copy of xfrm.nlsk that
will never be set to NULL.  This allows the synchronize_net and
netlink_kernel_release to be deferred until a whole batch of xfrm.nlsk sockets
have been set to NULL.

Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>