Re: [PREVIEW] Add x86 zstd kernel compression

["René Rebe" <rene@exactcode.com>]

Hi,

On 10/05/2017 09:22 PM, Nick Terrell wrote:
> On 10/5/17, 1:18 AM, "René Rebe" <rene@exactcode.com> wrote:
>>
>> Hi Nick,
>>
>> On Oct 5, 2017, at 1:29, Nick Terrell <terrelln@fb.com> wrote:
>>
>>> On 10/4/17, 3:01 AM, "linux-kernel-owner@vger.kernel.org on behalf of René Rebe" <linux-kernel-owner@vger.kernel.org on behalf of rene@exactcode.com> wrote:
>>>> Hi,
>>>>
>>>> I noticed zstd compression was recently added for btrfs and squashfs.
>>>> Are there actually already patches floating around for zstd kernel and intird compression?
>>>> Looks like that would be a quite nice fit regarding speed and compression ratio, …
>>>>
>>>> Regards,
>>>> 	René
>>>
>>> I started working on some patches yesterday, and just got zstd kernel,
>>> initrd, and initramfs compression working today. I think I'll be ready to
>>> send the patches out within a week.
>>
>> awesome, if you have something to test I could give it a try on my test bench, too.
> 
> Here is a preview of the patch, though its not quite ready.
> I believe it works, but I still need to clean it up a bit, and split it
> into the decompression function, the initrd piece, and the x86 specific
> piece. I'll try to get the patch set out this week, and I'll CC you.

thanks for the preview, which I applied cleanly, modulo this white-space 
chunk:

diff --git a/lib/Kconfig b/lib/Kconfig
index b1445b2..02fdcac 100644
@@ -296,7 +300,7 @@ config GENERIC_ALLOCATOR
   #
   config REED_SOLOMON
   	tristate
-
+
   config REED_SOLOMON_ENC8
   	bool
  to the 4.14-rc2 tarball and it compiled and booted on x86-64,
including a zstd initrd!

Great work, will probably start testing it on my personal
laptop, to use the same compression everywhere.

Regards,
	René

-- 
   René Rebe, ExactCODE GmbH, Lietzenburger Str. 42, DE-10117 Berlin
   http://exactcode.com | http://t2-project.org | http://rene.rebe.de