[RFC PATCH] ubifs: Add zstd support

[Richard Weinberger]

Yufen Yu,

Am Freitag, 12. Januar 2018, 10:24:21 CET schrieb Yufen Yu:
> Add zstd compression and decompression support to ubifs. zstd at its
> fastest level compresses almost as well as zlib, while offering much
> faster compression and decompression, approaching lzo speeds.
> 
> This patch is based on the patch:
> 	https://patchwork.kernel.org/patch/9892631/
> 
> zstd source repository: https://github.com/facebook/zstd

Do you have numbers on how much we gain for UBIFS on a typical embedded 
device?

Thanks,
//richard