ascend inclusion
category: bugfix
bugzilla: NA
CVE: NA

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

IO page fault can not be handled in time, because of low priority.
Increase priority of IO page fault worker queue to WQ_HIGHPRI.
Signed-off-by: NJiankang Chen <chenjiankang1@huawei.com>
Signed-off-by: NChen Jun <chenjun102@huawei.com>
Signed-off-by: NLijun Fang <fanglijun3@huawei.com>
Reviewed-by: NHanjun Guo <guohanjun@huawei.com>
Signed-off-by: NYang Yingliang <yangyingliang@huawei.com>