xfrm: policy: only use rcu in xfrm_sk_policy_lookup

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Don't acquire the readlock anymore and rely on rcu alone.

In case writer on other CPU changed policy at the wrong moment (after we
obtained sk policy pointer but before we could obtain the reference)
just repeat the lookup.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>

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Florian Westphal 2016-08-11 15:17:57 +02:00 • committed by Steffen Klassert

parent a7c44247f7

commit ae33786f73

1 changed files with 3 additions and 5 deletions

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net/xfrm/xfrm_policy.c

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