[PATCH net-next] ipvs: avoid kfree_rcu without 2nd arg

[Julian Anastasov <ja@xxxxxx>]

Avoid possible synchronize_rcu() as part from the
kfree_rcu() call when 2nd arg is not provided.

Signed-off-by: Julian Anastasov <ja@xxxxxx>
---
 include/net/ip_vs.h            | 1 +
 net/netfilter/ipvs/ip_vs_est.c | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/include/net/ip_vs.h b/include/net/ip_vs.h
index c6c61100d244..6d71a5ff52df 100644
--- a/include/net/ip_vs.h
+++ b/include/net/ip_vs.h
@@ -461,6 +461,7 @@ void ip_vs_stats_free(struct ip_vs_stats *stats);
 
 /* Multiple chains processed in same tick */
 struct ip_vs_est_tick_data {
+       struct rcu_head         rcu_head;
        struct hlist_head       chains[IPVS_EST_TICK_CHAINS];
        DECLARE_BITMAP(present, IPVS_EST_TICK_CHAINS);
        DECLARE_BITMAP(full, IPVS_EST_TICK_CHAINS);
diff --git a/net/netfilter/ipvs/ip_vs_est.c b/net/netfilter/ipvs/ip_vs_est.c
index df56073bb282..25c7118d9348 100644
--- a/net/netfilter/ipvs/ip_vs_est.c
+++ b/net/netfilter/ipvs/ip_vs_est.c
@@ -549,7 +549,7 @@ void ip_vs_stop_estimator(struct netns_ipvs *ipvs, struct 
ip_vs_stats *stats)
        __set_bit(row, kd->avail);
        if (!kd->tick_len[row]) {
                RCU_INIT_POINTER(kd->ticks[row], NULL);
-               kfree_rcu(td);
+               kfree_rcu(td, rcu_head);
        }
        kd->est_count--;
        if (kd->est_count) {
-- 
2.39.1