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netfilter: Replace call_rcu_bh(), rcu_barrier_bh(), and synchronize_rcu_bh()

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Now that call_rcu()'s callback is not invoked until after bh-disable
regions of code have completed (in addition to explicitly marked
RCU read-side critical sections), call_rcu() can be used in place
of call_rcu_bh().  Similarly, rcu_barrier() can be used in place of
rcu_barrier_bh() and synchronize_rcu() in place of synchronize_rcu_bh().
This commit therefore makes these changes.

Signed-off-by: Paul E. McKenney <paulmck@linux.ibm.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
This commit is contained in:
Paul E. McKenney
2018-11-11 11:43:59 -08:00
committed by Pablo Neira Ayuso
parent b966098769
commit c8d1da4000
4 changed files with 8 additions and 8 deletions
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6
net/ipv4/netfilter/ipt_CLUSTERIP.c
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@@ -94,7 +94,7 @@ static inline void
clusterip_config_put(struct clusterip_config *c)
{
if (refcount_dec_and_test(&c->refcount))
call_rcu_bh(&c->rcu, clusterip_config_rcu_free);
call_rcu(&c->rcu, clusterip_config_rcu_free);
}
/* decrease the count of entries using/referencing this config. If last
@@ -876,8 +876,8 @@ static void __exit clusterip_tg_exit(void)
xt_unregister_target(&clusterip_tg_reg);
unregister_pernet_subsys(&clusterip_net_ops);
/* Wait for completion of call_rcu_bh()'s (clusterip_config_rcu_free) */
rcu_barrier_bh();
/* Wait for completion of call_rcu()'s (clusterip_config_rcu_free) */
rcu_barrier();
}
module_init(clusterip_tg_init);