- Ursprüngliche Mail -
> ARM Cortex-A7. The kernel is compiled with gcc 7.3.1. Next week I'll
> test some more.
Good to know!
> I have a question about how the decompression is done while reading.
> When a large file is read from the filesystem (assuming not in any
> cache), is it the cas
uot;
> > , "Michele Dionisio"
> >
> > Gesendet: Freitag, 7. Juni 2019 22:27:09
> > Betreff: Re: [PATCH] ubifs: Add support for zstd compression.
> >> So I'm not sure what is the best choice for the default filesystem.
> >
> > My idea was at the end
- Ursprüngliche Mail -
> Von: "Emil Lenngren"
> An: "richard"
> CC: "linux-mtd" , "Sebastian Andrzej Siewior"
> , "linux-kernel"
> , "Michele Dionisio"
>
> Gesendet: Freitag, 7. Juni 2019 22:27:09
> B
Hi,
Den fre 7 juni 2019 kl 22:09 skrev Richard Weinberger :
>
> Emil,
>
> - Ursprüngliche Mail -
> > In fs/ubifs/sb.c we have
> >
> > static int get_default_compressor(struct ubifs_info *c)
> > {
> >if (ubifs_compr_present(c, UBIFS_COMPR_LZO))
> >return UBIFS_COMPR_LZO;
> >
> >
Emil,
- Ursprüngliche Mail -
> In fs/ubifs/sb.c we have
>
> static int get_default_compressor(struct ubifs_info *c)
> {
>if (ubifs_compr_present(c, UBIFS_COMPR_LZO))
>return UBIFS_COMPR_LZO;
>
>if (ubifs_compr_present(c, UBIFS_COMPR_ZLIB))
>return UBIFS_COMPR_ZLIB
Hello,
Den ons 15 maj 2019 kl 23:03 skrev Richard Weinberger :
>
> From: Michele Dionisio
>
> zstd shows a good compression rate and is faster than lzo,
> also on slow ARM cores.
>
> Cc: Sebastian Andrzej Siewior
> Signed-off-by: Michele Dionisio
> [rw: rewrote commit message]
> Signed-off-by:
On 2019-05-15 23:02:02 [+0200], Richard Weinberger wrote:
That is a lot less compared to what I needed for mkfs.ubifs. I just
tested this in nandsim and it works - I can read the image generated by
mkfs.
As for my compression level testing: Do we want to keep -L parameter or
rather drop it? The m
From: Michele Dionisio
zstd shows a good compression rate and is faster than lzo,
also on slow ARM cores.
Cc: Sebastian Andrzej Siewior
Signed-off-by: Michele Dionisio
[rw: rewrote commit message]
Signed-off-by: Richard Weinberger
---
fs/ubifs/Kconfig | 10 ++
fs/ubifs/compress
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