hulk inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I40JRR
CVE: NA

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Page wears are preallocated ints for all pages, each of the ints
records the number of writes to the page. This is used to
coarse-grainedly show the degree of wear.
Signed-off-by: NMingkai Dong <dongmingkai1@huawei.com>
Signed-off-by: NYu Kuai <yukuai3@huawei.com>
Reviewed-by: NHou Tao <houtao1@huawei.com>
Signed-off-by: NZheng Zengkai <zhengzengkai@huawei.com>