euler inclusion
category: bugfix
CVE: NA
Bugzilla: 13084

---------------------------

When user modify the cache_reclaim_s, cache_reclaim_sysctl_handler
will modify the work delay time. we fail to initialize the 'cpu'.

The patch should mod_delayed_work instead of mod_delayed_work to
fix the issue.
Signed-off-by: Nzhong jiang <zhongjiang@huawei.com>
Reviewed-by: NJing Xiangfeng <jingxiangfeng@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>