staging/lustre/ldlm: revert changes to ldlm_cancel_aged_policy()

The changes to ldlm_cancel_aged_policy() introduced from LU-4300
was incorrect. This patch revert this part of changes.
Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Reviewed-on: http://review.whamcloud.com/12448
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-5727Reviewed-by: Bobi Jam <bobijam@gmail.com>
Reviewed-by: Jinshan Xiong <jinshan.xiong@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Signed-off-by: Oleg Drokin <green@linuxhacker.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/staging/lustre/lustre/ldlm/ldlm_request.c

@@ -1240,10 +1240,8 @@ static ldlm_policy_res_t ldlm_cancel_aged_policy(struct ldlm_namespace *ns,
 						 int unused, int added,
 						 int count)
 {
-	if (added >= count)
-		return LDLM_POLICY_KEEP_LOCK;
-
-	if (time_before(cfs_time_current(),
+	if ((added >= count) &&
+	    time_before(cfs_time_current(),
 			cfs_time_add(lock->l_last_used, ns->ns_max_age)))
 		return LDLM_POLICY_KEEP_LOCK;