hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I4JWSP
CVE: NA

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Reserve space for the structure in memory subsystem.
Signed-off-by: NYongqiang Liu <liuyongqiang13@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Reviewed-by: NKefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>