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Preview of Linux 4.21 (Features)

Submitted by Roy Schestowitz on Thursday 20th of December 2018 12:32:31 PM Filed under
Linux
  • Btrfs Changes For Linux 4.21 Prepped With Swapfile Support, Logging Improvements

    Due to the Linux 4.21 merge window expected to open up next week just prior to Christmas, some kernel subsystem maintainers who won't be around in the days ahead have been sending in their pull requests early. Among those with early feature pulls is David Sterba continuing to oversee the Btrfs file-system development.

    Most notable to Btrfs in Linux 4.21 is the long-awaited support for swap files on Btrfs is now working but with a number of limitations for the time being, such as no compression or snapshotting.

  • The I3C Subsystem Seeks To Be Included In Linux 4.21

    The I3C subsystem had sought to be included in Linux 4.20, but ultimately it was rejected for being too late in the cycle for introducing a brand new subsystem. But now it's requested to be pulled into the upcoming Linux 4.21 merge window.

    Boris Brezillon has issued a new pull request looking to add I3C to the Linux 4.21 kernel. That 4.21 merge window should open next week, but due to the holidays, a number of PRs have been submitted early -- including the I3C Material.

  • AMD Audio Co-Processor 3.x Support Coming For Linux 4.21

    Coming to the next version of the Linux kernel is new sound driver support for the AMD ACP3x (Audio Co-Processor 3.x).

    This new AMD ALSA SoC PCM driver is used initially for AMD Raven Ridge APUs with the Audio Co-Processor 3.x (ACP3) but appears to be used by future AMD hardware too. This ACP3x driver is a bit late for supporting audio on Raven Ridge hardware with an I2S codec, but better late than never. Going back years there has been Linux support for support for older versions of the ACP.

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