[PATCH v2] erofs: tidy up EROFS on-disk naming

[Chao Yu]

On 2023/3/31 14:31, Gao Xiang wrote:
>   - Get rid of all "vle" (variable-length extents) expressions
>     since they only expand overall name lengths unnecessarily;
>   - Rename COMPRESSION_LEGACY to COMPRESSED_FULL;
>   - Move on-disk directory definitions ahead of compression;
>   - Drop unused extended attribute definitions;
>   - Move inode ondisk union `i_u` out as `union erofs_inode_i_u`.
> 
> No actual logical change.
> 
> Signed-off-by: Gao Xiang <hsiangkao at linux.alibaba.com>

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

Thanks,