Linux Weekly News
[$] Removing GFP_NOFS
The state of SourceHut
Drew DeVault has published an update about the state of the SourceHut software development platform and its plans for the coming months. This is the first update since the January post-mortem following a distributed denial-of-service (DDoS) attack that resulted in a prolonged outage:
As you can imagine, it has been a stressful time for us. However, I wish to stress that everything we've been dealing with is planned for in our models, both technical and financial. There is no existential threat to SourceHut. Nevertheless, we are grateful for your patience and support.
[...] We have been focusing on two things this year: provisioning and managing our infrastructure and getting as much rest as possible. Our situation has calmed down, and while we still have a lot of loose ends to attend to I'm happy to say that we're resuming a sense of normalcy here and preparing to resume our work on the features you need.
[$] Comparing BPF performance between implementations
Alan Jowett returned for a second remote presentation at the 2024 Linux Storage, Filesystem, Memory Management, and BPF Summit to compare the performance of different BPF runtimes. He showed the results of the MIT-licensed BPF microbenchmark suite he has been working on. The benchmark suite does not yet provide a good direct comparison between all platforms, so the results should be taken with a grain of salt. They do seem to indicate that there is some significant variation between implementations, especially for different types of BPF maps.
Security updates for Wednesday
Mike Karels has passed away
Incus 6.2 released
New site feature: comment subthread hiding
Give it a try; if you have comments on the new mechanism, this is the place to put them.
[$] Handling the NFS change attribute
[$] An instruction-level BPF memory model
There are few topics as arcane as memory models, so it was a pleasant surprise when the double-length session on the BPF memory model at the Linux Storage, Filesystem, Memory Management, and BPF Summit turned out to be understandable. Paul McKenney led the session, although he was clear that the work he was presenting was also due to Puranjay Mohan, who unfortunately could not attend the summit. BPF does not actually have a formalized memory model yet; instead it has relied on a history of talks like this one and a general informal understanding. Unfortunately, ignoring memory models does not make them go away, and this has already caused at least one BPF-related bug on weakly-ordered architectures. Figuring out what a formal memory model for BPF should define was the focus of McKenney's talk.
Security updates for Tuesday
LyX 2.4.0 Released
Version 2.4.0 of the LyX document processor has been released. LyX is a "What You See Is What You Mean" (WYSIWYM) application that offers GUI editing of LaTeX documents with import and export to PDF, HTML, OpenDocument, Word, and other formats. LyX 2.4.0 is the first major release in six years, and brings support for EPUB, DocBook 5, improved table styles, and now uses Unicode (utf8) as its default encoding. See the full list of new features on the LyX wiki, and release notes for information on known issues and caveats for those upgrading from earlier versions of LyX.
[$] Debian's /tmpest in a teapot
Debian had a major discussion about mounting /tmp as a RAM-based tmpfs in 2012 but inertia won out in the end. Debian systems have continued to store temporary files on disk by default. Until now. A mere 12 years later, the project will be switching to a RAM-based /tmp in the Debian 13 ("Trixie") release. Additionally, starting with Trixie, the default will be to periodically clean up temporary files automatically in /tmp and /var/tmp. Naturally, it involved a lengthy discussion first.
Security updates for Monday
Kernel prepatch 6.10-rc2
Fedora Linux 40 election results
The Fedora Project has announced the results of the Fedora Linux 40 election cycle. Four seats were open on the Fedora Engineering Steering Committee (FESCo), and the winners are Stephen Gallagher, Neal Gompa, Michel Lind, and Fabio Valentini. The Fedora Council had two seats open, and the winners are Aleksandra Fedorova and Adam Samalik. One seat was open on the Fedora Mindshare Committee, and the winner is Sumantro Mukherjee. Four seats were open for the first election to select members of the EPEL Steering Committee, which went to Troy Dawson, Kevin Fenzi, Carl George, and Jonathan Wright.
Opt Green: KDE Eco's New Sustainable Software Project
KDE Eco, a KDE project focused on reducing software's environmental impact, has announced its Opt Green campaign to reduce e-waste:
Over the next two years, the "Opt Green" initiative will bring what KDE Eco has been doing for sustainable software directly to end users. A particular target group for the project is those whose consumer behavior is driven by principles related to the environment, and not just price or convenience: the "eco-consumers".
Through online and offline campaigns as well as installation workshops, we will demonstrate the power of Free Software to drive down resource and energy consumption, and keep devices in use for the lifespan of the hardware, not the software.
Our motto: The most environmentally-friendly device is the one you already own.
See the KDE Eco Get Involved page for more information on how to participate.
[$] One more pidfdfs surprise
CFP: the 2024 Kernel Maintainers Summit
25 Years of Krita
A quarter century. That's how long we've been working on Krita. Well, what would become Krita. It started out as KImageShop, but that name was nuked by a now long-dead German lawyer. Then it was renamed to Krayon, and that name was also nuked. Then it was renamed to Krita, and that name stuck.