config: Enable CONFIG_EXT4_PARALLEL_DIO_READ as default

hulk inclusion
category: feature
bugzilla: 185871, https://gitee.com/openeuler/kernel/issues/I4MIQ0


CVE: NA

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Enable CONFIG_EXT4_PARALLEL_DIO_READ as default.

The configuration is used for control whether the ext4 is supported
parallel dio reads. Enable it can improve the dio read performance,
but has adversely affected for mixed dio read/write.

Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: Zhang Yi <yi.zhang@huawei.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>