security,rcu: Convert call_rcu(sel_netport_free) to kfree_rcu()

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>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>

1 files changed, 2 insertions, 18 deletions

diff --git a/security/selinux/netport.c b/security/selinux/netport.c
index cfe2d72d3fb7..ae76e298de7d 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;
         }