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"Native Linux apps in Chrome OS" and Kernel News From LWN

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Linux
  • Native Linux apps in Chrome OS will have a slick, electric Material Design theme

    The Chrome OS developers have been working out the stylistic elements of what you’ll see once you open your first native Linux apps in Chrome OS, and they’ve opted for Adapta, a popular Material Design-inspired Gtk theme that can be used on many of your favorite GNU/Linux distributions.

    For those of you not keeping track, the Chrome OS developers have been busy baking native container functionality into Chrome OS that allows the user-friendly startup of regular Linux applications in containers-within-VMs. This project, codename “Crostini,” is the largest change to Chrome OS since Android apps were introduced. Containers allow for applications to run in their own dedicated environment in isolation of the host OS – like a virtual machine, except unlike a VM, it doesn’t virtualize the whole OS to make the application work, it just bundles up the application and necessary baggage into an executable package.

  • The rhashtable documentation I wanted to read

    The rhashtable data structure is a generic resizable hash-table implementation in the Linux kernel, which LWN first introduced as "relativistic hash tables" back in 2014. I thought at the time that it might be fun to make use of rhashtables, but didn't, until an opportunity arose through my work on the Lustre filesystem. Lustre is a cluster filesystem that is currently in drivers/staging while the code is revised to meet upstream requirements. One of those requirements is to avoid duplicating similar functionality where possible. As Lustre contains a resizable hash table, it really needs to be converted to use rhashtables instead — at last I have my opportunity.

    It didn't take me long to discover that the rhashtable implementation in Linux 4.15 is quite different from the one that originally landed in Linux 3.17, so the original LWN introduction is now barely relevant. I also quickly discovered that the in-kernel documentation was partially wrong, far from complete, and didn't provide any sort of "getting started" guide. Nevertheless I persisted and eventually developed a fairly complete understanding of the code, which seems worth sharing. This article gives an introduction to the use of the rhashtable interfaces without getting into too many internal implementation details. A followup will explain how rhashtables work internally and show how some of the mechanism details leak though the interfaces.

  • The second half of the 4.17 merge window

    By the time the 4.17 merge window was closed and 4.17-rc1 was released, 11,769 non-merge changesets had been pulled into the mainline repository. 4.17 thus looks to be a typically busy development cycle, with a merge window only slightly more busy than 4.16 had. Some 6,000 of those changes were pulled after last week's summary was written.

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today's howtos

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    In this tutorial, we are going to explore how to install go on Ubuntu 22.04 Golang is an open-source programming language that is easy to learn and use. It is built-in concurrency and has a robust standard library. It is reliable, builds fast, and efficient software that scales fast. Its concurrency mechanisms make it easy to write programs that get the most out of multicore and networked machines, while its novel-type systems enable flexible and modular program constructions. Go compiles quickly to machine code and has the convenience of garbage collection and the power of run-time reflection. In this guide, we are going to learn how to install golang 1.19beta on Ubuntu 22.04. Go 1.19beta1 is not yet released. There is so much work in progress with all the documentation.

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  • How To Install MongoDB on AlmaLinux 9 - idroot

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