[WIP] [PATCH] staging: erofs: cleanup z_erofs_do_read_page

[Chao Yu]

On 2018/8/9 18:09, Gao Xiang wrote:
> This patch adds error handing code, and fixes a
> bug when appling caching policy, which can cause
> the ending compressed pack of a request uncached.

Aslo including too many kind of change in one patch, how about splitting this patch?

Thanks,