【openEuler 21.09】【arm】ltp执行proc01用例失败。

【标题描述】ltp执行proc01用例失败。
【环境信息】
硬件信息：
软件信息：
1） OS版本及分支：openEuler 21.09
2）内核信息：5.10.0-5.3.0.18.oe1
3）软件组件：ltp-20210524
如果有特殊组网，请提供网络拓扑图
【问题复现步骤】
具体操作步骤：
./runltp -s proc01
出现概率：必现
【预期结果】
用例执行成功
【实际结果】
用例执行失败
【附件信息】
输入图片说明

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ltp中proc01用例错误原因：/proc/dirty/dirty为自研特性，开源ltp用例中没有对此进行特殊处理，可以通过执行echo 1024 > /proc/dirty/buffer_size，然后执行proc01用例不会有问题

自研特性fs/dirty_pages: dump the number of dirty pages for each inode
In order to analysing the IO performance when using buffer IO, it's
useful to obtain the number of dirty pages for a inode in the filesystem.

This feather is migrated from redhat-7.2.
It create 3 interfaces by using
profs.
/proc/dirty/buffer_size for buffer allocation and release;
/proc/dirty/page_threshold to filter result;
/proc/dirty/dirty_list to get dirty pages.
Visit http://openeuler.huawei.com/bugzilla/show_bug.cgi?id=23941
for details about modifications and implementations.

按照开发提供方法，重新复测后，问题不再出现，关闭此单

余快：打印脏页需要在内核申请一块buffer存储数据

GVP openEuler / kernel

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