netfilter: nft_compat: use call_rcu for nfnl_compat_get
Just use .call_rcu instead. We can drop the rcu read lock after obtaining a reference and re-acquire on return. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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