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Kernel: Rust and Linux 5.14, Least Recently Used (LRU), Linux 5.12 Says Away

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Linux
  • Rust support in Linux may be possible by 5.14 release: Torvalds

    The first patches for Rust support in the Linux kernel have been posted and the man behind the kernel says the fact that these are being discussed is much more important than a long post by Google about the language.

    Linus Torvalds told iTWire in response to queries that Rust support was "not there yet", adding that things were "getting to the point where maybe it might be mergeable for 5.14 or something like that".

  • Google Is Working On A New And Possibly Better LRU Memory Management Framework For The Linux Kernel

    The linux kernel loves to fill all available RAM with caches of files and other items. This speeds things up because memory caches are much faster than Direct I/O. One obvious bi-effect is that all system RAM can be in use and, at the same time, be free as in available for applications who may need it.

    The Linux kernels Least Recently Used (LRU) framework decides what gets kept and what gets thrown out in case some system memory is needed by an applications. It covers the majority of a machines memory pages. Slab caches and a few other caches are exceptions. LRU pages are put in one of two linked lists with active or inactive pages. Pages taken from the end of the inactive list are freed unless it has the reference bit set. Pages are, in that case, moved to the beginning of the active page list and the reference bit is cleared. Dirty pages, as in pages that should be written to disk, are put in the writeback queue and later moved to the beginning of the inactive memory list. Memory pages that are unreferenced and clean get reused.

  • The 12 Most Interesting Changes Of Linux 5.12 - PS5, N64, Intel VRR, RDNA2 OverDrive

    If all goes well the Linux 5.12 stable kernel will be released this weekend. It's been a fairly calm week so far in Linux 5.12 Git land but if things tick up Linus Torvalds may defer the stable release by one week to allow for an eighth and final release candidate. In any case, Linux 5.12 is packing a lot of exciting changes.

    After the Linux 5.12 merge window I wrote a Linux 5.12 feature overview. But for those that didn't see it or recall it from two months ago, here is a look at the top twelve features/changes coming with Linux 5.12 for a quick recap

Slashdot

  • Linus Torvalds Says Rust Closer for Linux Kernel Development, Calls C++ 'A Crap Language'

    Google's Android team supports Rust for developing the Android operating system. Now they're also helping evaluate Rust for Linux kernel development. Their hopes, among other things, are that "New code written in Rust has a reduced risk of memory safety bugs, data races and logic bugs overall," that "abstractions that are easier to reason about," and "More people get involved overall in developing the kernel, thanks to the usage of a modern language."

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