linux-kernel - Re: [RFC PATCH] ubifs: Add zstd support

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Date:   Tue, 16 Jan 2018 11:55:50 +0100
From:   Richard Weinberger <richard@....at>
To:     yuyufen <yuyufen@...wei.com>
Cc:     dedekind1@...il.com, adrian.hunter@...el.com,
        linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org
Subject: Re: [RFC PATCH] ubifs: Add zstd support

Am Dienstag, 16. Januar 2018, 07:16:44 CET schrieb yuyufen:
> On 2018/1/12 18:45, Richard Weinberger wrote:
> > 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
> > 
> > .
> 
> This is a RFC patch. I will post the test results after the full
> function completing.

Well, I have nothing against adding zstd support to UBIFS, if you can show 
that it is useful and can explain why we should use zstd and not another 
modern compressor.

Thanks,
//richard