[PATCH] erofs: improve LZ4 error strings

[Chao Yu]

On 12/19/2025 2:43 PM, Gao Xiang wrote:
> Just like what was done for other algorithms, let's propagate detailed
> error reasons for LZ4 instead of just -EFSCORRUPTED to users:
> 
>   "corrupted compressed data":
>      the compressed data is malformed or
>        destination buffer is not large enough
> 
>   "unexpected end of stream":
>      the compressed stream ends normally, but without producing enough
>      decompressed data.
> 
>   "compressed data start not found":
>      can be returned by z_erofs_fixup_insize().
> 
> Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>

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

Thanks,