Christoph Hellwig News Today

The Linux 6.6 modules infrastructure is changing to better protect against the illicit behavior of NVIDIA's proprietary kernel driver.

The bcachefs filesystem, and the process for getting it upstream, were the topics of a session led remotely by Kent Overstreet, creator of bcachefs, at the 2023 Linux Storage, Filesystem, Memory-Management and BPF Summit. He has also discussed bcachefs in previous editions of the summit, first in 2018 and at last years event; in both of those cases, the question of getting bcachefs merged into the mainline kernel came up, but that merge has not happened yet. This time around, though, Overstr...

No data structures found in the Linux kernel — at least, in any version that escaped from Linus Torvaldss development machine — are older than the buffer head. Like many other legacies from the early days of Linux, buffer heads have been targeted for removal for years. They persist, though, despite the problems they present. Now, Christoph Hellwig has posted a patch series that enables the building of a kernel without buffer heads — but the cost of doing so at this point will be more th...

No data structures found in the Linux kernel — at least, in any version that escaped from Linus Torvaldss development machine — are older than the buffer head. Like many other legacies from the early days of Linux, buffer heads have been targeted for removal for years. They persist, though, despite the problems they present. Now, Christoph Hellwig has posted a patch series that enables the building of a kernel without buffer heads — but the cost of doing so at this point will be more th...

The extended BPF (eBPF) virtual machine allows programs to be loaded into and executed with the kernel — and, increasingly, other environments. As the use of BPF grows, so does interest in defining what the BPF virtual machine actually is. In an effort to ensure a consistent and fair environment for defining what constitutes the official BPF language and run-time environment, and to encourage NVMe vendors to support BPF offloading, a recent effort has been undertaken to standardize BPF.