[PATCH v4] erofs: lazily initialize per-CPU workers and CPU hotplug hooks

[Sandeep Dhavale]

> I could fix up this part manually if you don't have strong
> opinion on this.
>

Hi Gao,
I don't have any objection to styling as it is subjective. I am ok
with the fixup.

Thanks,
Sandeep.

> Thanks,
> Gao Xiang
>