[RFC PATCH v2] jffs2: add support for zstd compression

[David Woodhouse]

On Thu, 2021-03-25 at 14:47 +0000, Rui Salvaterra wrote:
> Friendly ping (and also cc'ing dwmw2).
> 
> On Tue, 16 Mar 2021 at 14:19, Rui Salvaterra <rsalvaterra at gmail.com> wrote:
> > 
> > Implement support for zstd compression in jffs2 at the default compression
> > level (3).
> > 
> > Lightly tested in OpenWrt, on a single CPU embedded MIPS32 system (AirGrid M2).

Seems reasonable. Do you have the corresponding addition for mkfs.jffs2
and can you report the boot time / image sizes with it vs. zlib on a
typical platform?

And if it doesn't make a difference to boot time or image size... why
are we doing it?
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