[PATCH RESEND] audit: don't check if kauditd is valid everytime

[Gao feng]

We only need to check if kauditd is valid after we start
it, if kauditd is invalid, we will set kauditd_task to NULL.
So next time, we will start kauditd again.

It means if kauditd_task is not NULL,it must be valid.

Signed-off-by: Gao feng <gaofeng at cn.fujitsu.com>
---
 kernel/audit.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/kernel/audit.c b/kernel/audit.c
index d596e53..c3a6ead 100644
--- a/kernel/audit.c
+++ b/kernel/audit.c
@@ -660,12 +660,13 @@ static int audit_receive_msg(struct sk_buff *skb, struct nlmsghdr *nlh)
 
 	/* As soon as there's any sign of userspace auditd,
 	 * start kauditd to talk to it */
-	if (!kauditd_task)
+	if (!kauditd_task) {
 		kauditd_task = kthread_run(kauditd_thread, NULL, "kauditd");
-	if (IS_ERR(kauditd_task)) {
-		err = PTR_ERR(kauditd_task);
-		kauditd_task = NULL;
-		return err;
+		if (IS_ERR(kauditd_task)) {
+			err = PTR_ERR(kauditd_task);
+			kauditd_task = NULL;
+			return err;
+		}
 	}
 
 	loginuid = audit_get_loginuid(current);
-- 
1.7.11.7