[PATCH 1/2] erofs: clean up z_erofs_extent_lookback

[Chao Yu]

On 2022/3/11 2:27, Gao Xiang wrote:
> Avoid the unnecessary tail recursion since it can be converted into
> a loop directly in order to prevent potential stack overflow.
> 
> It's a pretty straightforward conversion.
> 
> Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>

Reviewed-by: Chao Yu <chao at kernel.org>

Thanks,