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

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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>
This commit is contained in:
Lai Jiangshan 2011-03-18 12:05:57 +08:00 committed by Paul E. McKenney
parent 9801c60e99
commit 449a68cc65
1 changed files with 2 additions and 18 deletions
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20
security/selinux/netport.c
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@ -67,22 +67,6 @@ static LIST_HEAD(sel_netport_list);
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;
}