linux-kernel - Re: linux-next: trees being removed (zstd tree)

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Message-ID: <20250219192921.GF5777@twin.jikos.cz>
Date: Wed, 19 Feb 2025 20:29:21 +0100
From: David Sterba <dsterba@...e.cz>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Linux Next Mailing List <linux-next@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Dan Williams <dan.j.williams@...el.com>,
	"Gustavo A. R. Silva" <gustavo@...eddedor.com>,
	Jeff Layton <jlayton@...nel.org>, Jeremy Kerr <jk@...abs.org>,
	Joel Stanley <joel@....id.au>,
	Kent Overstreet <kent.overstreet@...ux.dev>,
	Linus Walleij <linus.walleij@...aro.org>,
	Nick Terrell <terrelln@...com>, Vineet Gupta <vgupta@...nel.org>
Subject: Re: linux-next: trees being removed (zstd tree)

On Sun, Feb 16, 2025 at 10:42:00PM +1100, Stephen Rothwell wrote:
> Hi all,
> 
> On Wed, 12 Feb 2025 09:56:32 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> >
> > Tree			Last commit date
> >   URL
> >   comits (if any)
> > ----			----------------
> > file-locks		2023-09-01 08:09:48 -0700
> >   git://git.kernel.org/pub/scm/linux/kernel/git/jlayton/linux.git#locks-next
> > fsi			2023-12-14 19:44:11 +1030
> >   git://git.kernel.org/pub/scm/linux/kernel/git/joel/fsi.git#next
> >   ec084e4ec314 ("fsi: sbefifo: Bump up user write cmd length")
> >   f7236a0c919e ("fsi: sbefifo: Handle pending write command")
> >   c5eeb63edac9 ("fsi: Fix panic on scom file read")
> > gpio			2023-09-10 16:28:41 -0700
> >   git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio.git#for-next
> > header_cleanup		2024-01-15 15:52:12 -0500
> >   git://evilpiepirate.org/bcachefs.git#header_cleanup
> > kspp-gustavo		2024-01-21 14:11:32 -0800
> >   git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux.git#for-next/kspp
> > tsm			2023-10-19 18:12:00 -0700
> >   git://git.kernel.org/pub/scm/linux/kernel/git/djbw/linux#tsm-next
> > zstd			2023-11-20 14:49:34 -0800
> >   https://github.com/terrelln/linux.git#zstd-next
> >   98988fc8e9ed ("zstd: import upstream v1.5.5")
> >   40eb0e915deb ("zstd: Backport Huffman speed improvement from upstream")
> >   3f832dfb8a8e ("zstd: fix g_debuglevel export warning")
> > zstd-fixes		2023-11-14 17:12:52 -0800
> >   https://github.com/terrelln/linux.git#zstd-linus
> 
> All the above trees have been removed.  Give me a yell if you want one
> back.

That's unfortunate that ZSTD is out of linux-next. We have several
in-kernel users of ZSTD so we need to keep up with its upstream. In the
past the ZSTD syncs were already in big steps, like from 1.4.10 to
1.5.0. Now we don't even have the 1.5.5 updated merged for like 1.5 year
(since 6.6 times).

There are scripts to prepare the update for kernel, it's quite easy to
get it for linux.git testing. There still needs to be a review because
it's userspace code but it should not be that hard.

Unless Nick wants to continue maintaining it, I am reluctantly
volunteering with hopes that somebody will join and take over it
eventually.