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security,rcu: convert call_rcu(user_update_rcu_disposal) to kfree_rcu()

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

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: David Howells <dhowells@redhat.com>
Reviewed-by: Josh Triplett <josh@joshtriplett.org>
This commit is contained in:
Lai Jiangshan 2011-03-18 12:11:07 +08:00 committed by Paul E. McKenney
parent 75ef0368d1
commit 3acb458c32
1 changed files with 2 additions and 14 deletions
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16
security/keys/user_defined.c
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@ -68,18 +68,6 @@ int user_instantiate(struct key *key, const void *data, size_t datalen)
EXPORT_SYMBOL_GPL(user_instantiate);
/*
* dispose of the old data from an updated user defined key
*/
static void user_update_rcu_disposal(struct rcu_head *rcu)
{
struct user_key_payload *upayload;
upayload = container_of(rcu, struct user_key_payload, rcu);
kfree(upayload);
}
/*
* update a user defined key
* - the key's semaphore is write-locked
@ -114,7 +102,7 @@ int user_update(struct key *key, const void *data, size_t datalen)
key->expiry = 0;
}
call_rcu(&zap->rcu, user_update_rcu_disposal);
kfree_rcu(zap, rcu);
error:
return ret;
@ -145,7 +133,7 @@ void user_revoke(struct key *key)
if (upayload) {
rcu_assign_pointer(key->payload.data, NULL);
call_rcu(&upayload->rcu, user_update_rcu_disposal);
kfree_rcu(upayload, rcu);
}
}