netfilter: nf_tables: remove rcu read-size lock

Chain stats are updated from the Netfilter hook path which already run
under rcu read-size lock section.

Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>

diff --git a/net/netfilter/nf_tables_core.c b/net/netfilter/nf_tables_core.c
index adc3480560767dfc3641823f9be6afd43c719f75..41c7509955e6a1d5872c0e12fc238cc443aa5d14 100644 (file)
--- a/net/netfilter/nf_tables_core.c
+++ b/net/netfilter/nf_tables_core.c
@@ -110,7 +110,6 @@ static noinline void nft_update_chain_stats(const struct nft_chain *chain,
 
        base_chain = nft_base_chain(chain);
 
-       rcu_read_lock();
        pstats = READ_ONCE(base_chain->stats);
        if (pstats) {
                local_bh_disable();
@@ -121,7 +120,6 @@ static noinline void nft_update_chain_stats(const struct nft_chain *chain,
                u64_stats_update_end(&stats->syncp);
                local_bh_enable();
        }
-       rcu_read_unlock();
 }
 
 struct nft_jumpstack {