diff mbox

[tip/core/rcu,20/28] security,rcu: Convert call_rcu(sel_netnode_free) to kfree_rcu()

Message ID 1307561407-13809-20-git-send-email-paulmck@linux.vnet.ibm.com
State Accepted
Commit 9801c60e99ed76c5730fb290c00bfad12a419972
Headers show

Commit Message

Paul E. McKenney June 8, 2011, 7:29 p.m. UTC 
From: Lai Jiangshan <laijs@cn.fujitsu.com>

The rcu callback sel_netnode_free() just calls a kfree(),
so we use kfree_rcu() instead of the call_rcu(sel_netnode_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>
---
 security/selinux/netnode.c |   20 ++------------------
 1 files changed, 2 insertions(+), 18 deletions(-)
diff mbox

Patch

diff --git a/security/selinux/netnode.c b/security/selinux/netnode.c
index 65ebfe9..692b857 100644
--- a/security/selinux/netnode.c
+++ b/security/selinux/netnode.c
@@ -69,22 +69,6 @@  static DEFINE_SPINLOCK(sel_netnode_lock);
 static struct sel_netnode_bkt sel_netnode_hash[SEL_NETNODE_HASH_SIZE];
 
 /**
- * sel_netnode_free - Frees a node 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 node entry can be
- * released safely.
- *
- */
-static void sel_netnode_free(struct rcu_head *p)
-{
-	struct sel_netnode *node = container_of(p, struct sel_netnode, rcu);
-	kfree(node);
-}
-
-/**
  * sel_netnode_hashfn_ipv4 - IPv4 hashing function for the node table
  * @addr: IPv4 address
  *
@@ -192,7 +176,7 @@  static void sel_netnode_insert(struct sel_netnode *node)
 			rcu_dereference(sel_netnode_hash[idx].list.prev),
 			struct sel_netnode, list);
 		list_del_rcu(&tail->list);
-		call_rcu(&tail->rcu, sel_netnode_free);
+		kfree_rcu(tail, rcu);
 	} else
 		sel_netnode_hash[idx].size++;
 }
@@ -305,7 +289,7 @@  static void sel_netnode_flush(void)
 		list_for_each_entry_safe(node, node_tmp,
 					 &sel_netnode_hash[idx].list, list) {
 				list_del_rcu(&node->list);
-				call_rcu(&node->rcu, sel_netnode_free);
+				kfree_rcu(node, rcu);
 		}
 		sel_netnode_hash[idx].size = 0;
 	}