From cefcb602012482003ca2ccc44fcba628d006e4bd Mon Sep 17 00:00:00 2001 From: "Paul E. McKenney" Date: Mon, 2 May 2011 01:00:18 -0700 Subject: [PATCH] net,rcu: Convert call_rcu(xt_rateest_free_rcu) to kfree_rcu() The RCU callback xt_rateest_free_rcu() just calls kfree(), so we can use kfree_rcu() instead of call_rcu(). This also allows us to dispense with an rcu_barrier() call, speeding up unloading of this module. Signed-off-by: Paul E. McKenney Cc: Patrick McHardy Reviewed-by: Josh Triplett --- net/netfilter/xt_RATEEST.c | 8 +------- 1 file changed, 1 insertion(+), 7 deletions(-) diff --git a/net/netfilter/xt_RATEEST.c b/net/netfilter/xt_RATEEST.c index de079abd5bc8..f264032b8c56 100644 --- a/net/netfilter/xt_RATEEST.c +++ b/net/netfilter/xt_RATEEST.c @@ -60,11 +60,6 @@ struct xt_rateest *xt_rateest_lookup(const char *name) } EXPORT_SYMBOL_GPL(xt_rateest_lookup); -static void xt_rateest_free_rcu(struct rcu_head *head) -{ - kfree(container_of(head, struct xt_rateest, rcu)); -} - void xt_rateest_put(struct xt_rateest *est) { mutex_lock(&xt_rateest_mutex); @@ -75,7 +70,7 @@ void xt_rateest_put(struct xt_rateest *est) * gen_estimator est_timer() might access est->lock or bstats, * wait a RCU grace period before freeing 'est' */ - call_rcu(&est->rcu, xt_rateest_free_rcu); + kfree_rcu(est, rcu); } mutex_unlock(&xt_rateest_mutex); } @@ -188,7 +183,6 @@ static int __init xt_rateest_tg_init(void) static void __exit xt_rateest_tg_fini(void) { xt_unregister_target(&xt_rateest_tg_reg); - rcu_barrier(); /* Wait for completion of call_rcu()'s (xt_rateest_free_rcu) */ } -- 2.20.1