[PATCH tip/core/rcu 1/7] net,rcu: convert call_rcu(sk_filter_release_rcu) to kfree_rcu

[Paul E. McKenney]

The RCU callback sk_filter_release_rcu just calls kfree(), so we use
kfree_rcu() instead of call_rcu().

Signed-off-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxxxxxxx>
Cc: Patrick McHardy <kaber@xxxxxxxxx>
Cc: David S. Miller <davem@xxxxxxxxxxxxx>
---
 include/net/sock.h |    4 +---
 net/core/filter.c  |   12 ------------
 2 files changed, 1 insertions(+), 15 deletions(-)

diff --git a/include/net/sock.h b/include/net/sock.h
index 01810a3..60caa06 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -1179,8 +1179,6 @@ extern void sk_common_release(struct sock *sk);
 /* Initialise core socket variables */
 extern void sock_init_data(struct socket *sock, struct sock *sk);
 
-extern void sk_filter_release_rcu(struct rcu_head *rcu);
-
 /**
  *	sk_filter_release - release a socket filter
  *	@fp: filter to remove
@@ -1191,7 +1189,7 @@ extern void sk_filter_release_rcu(struct rcu_head *rcu);
 static inline void sk_filter_release(struct sk_filter *fp)
 {
 	if (atomic_dec_and_test(&fp->refcnt))
-		call_rcu(&fp->rcu, sk_filter_release_rcu);
+		kfree_rcu(fp, rcu);
 }
 
 static inline void sk_filter_uncharge(struct sock *sk, struct sk_filter *fp)
diff --git a/net/core/filter.c b/net/core/filter.c
index afb8afb..7195ce0 100644
--- a/net/core/filter.c
+++ b/net/core/filter.c
@@ -631,18 +631,6 @@ int sk_chk_filter(struct sock_filter *filter, int flen)
 EXPORT_SYMBOL(sk_chk_filter);
 
 /**
- * 	sk_filter_release_rcu - Release a socket filter by rcu_head
- *	@rcu: rcu_head that contains the sk_filter to free
- */
-void sk_filter_release_rcu(struct rcu_head *rcu)
-{
-	struct sk_filter *fp = container_of(rcu, struct sk_filter, rcu);
-
-	kfree(fp);
-}
-EXPORT_SYMBOL(sk_filter_release_rcu);
-
-/**
  *	sk_attach_filter - attach a socket filter
  *	@fprog: the filter program
  *	@sk: the socket to use
-- 
1.7.3.2

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