[PATCH tip/core/rcu 82/86] security,rcu: convert call_rcu(sel_netport_free) to kfree_rcu()

Paul E. McKenney
2011-05-01T13:24:55Z

From: Lai Jiangshan <laijs@cn.fujitsu.com>

The rcu callback sel_netport_free() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(sel_netport_free).

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: James Morris <jmorris@namei.org>
Cc: Eric Paris <eparis@parisplace.org>
---
security/selinux/netport.c | 20 ++------------------
1 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/security/selinux/netport.c b/security/selinux/netport.c
index cfe2d72..ae76e29 100644
--- a/security/selinux/netport.c
+++ b/security/selinux/netport.c
@@ -68,22 +68,6 @@ static DEFINE_SPINLOCK(sel_netport_lock);
static struct sel_netport_bkt sel_netport_hash[SEL_NETPORT_HASH_SIZE];

/**
- * sel_netport_free - Frees a port entry
- * @p: the entry's RCU field
- *
- * Description:
- * This function is designed to be used as a callback to the call_rcu()
- * function so that memory allocated to a hash table port entry can be
- * released safely.
- *
- */
-static void sel_netport_free(struct rcu_head *p)
-{
- struct sel_netport *port = container_of(p, struct sel_netport, rcu);
- kfree(port);
-}
-
-/**
* sel_netport_hashfn - Hashing function for the port table
* @pnum: port number
*
@@ -142,7 +126,7 @@ static void sel_netport_insert(struct sel_netport *port)
rcu_dereference(sel_netport_hash[idx].list.prev),
struct sel_netport, list);
list_del_rcu(&tail->list);
- call_rcu(&tail->rcu, sel_netport_free);
+ kfree_rcu(tail, rcu);
} else
sel_netport_hash[idx].size++;
}
@@ -241,7 +225,7 @@ static void sel_netport_flush(void)
list_for_each_entry_safe(port, port_tmp,
&sel_netport_hash[idx].list, list) {
list_del_rcu(&port->list);
- call_rcu(&port->rcu, sel_netport_free);
+ kfree_rcu(port, rcu);
}
sel_netport_hash[idx].size = 0;
}
--
1.7.3.2