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More Late Additions to Linux 5.15

Submitted by Roy Schestowitz on Sunday 5th of September 2021 03:54:33 PM Filed under
Linux

  • High Resolution Scrolling On Linux Progressing, Apple Magic Mouse Support In Linux 5.15 - Phoronix

    Being worked on for several years now on the Linux desktop has been high resolution scrolling including work for it around X Input, the libinput library used both by X.Org and Wayland systems, and the kernel driver side for the HID/input devices to support it. The latest user-space work is high resolution scroll wheel support within the next libinput release. Separately, with Linux 5.15 is now additionally support for high resolution scrolling with the Apple Magic Mouse.

    Peter Hutterer of Red Hat who serves as the Linux input expert and is responsible for much of the high resolution scrolling work released libinput 1.18-rc1. With this new snapshot there is support for hold gestures and high resolution scroll wheel support. Peter notes in that announcement that the high resolution wheel scrolling replaces the earlier pointer axis API.

  • F2FS Sees More Performance Work For Linux 5.15 - Phoronix

    With Linux 5.15 there are optimizations for EXT4, big improvements for XFS, and significant work on Btrfs too. Rounding out the notable file-system work on Linux 5.15, the F2FS updates were submitted and subsequently landed for this next kernel version.

    F2FS with Linux 5.15 has also been striving for better performance by addressing issues around locking contention, correcting compress_cache issues, and resolving other problems.

  • FUTEX2 Revised Again For Helping Steam Play But Will Miss Out On Linux 5.15 - Phoronix

    One of the kernel patch series that has seen ongoing work for more than one year now is around introducing the FUTEX2 system call to better match the behavior of Microsoft Windows' NT kernel in order to allow for more efficient Proton/Wine usage that powers Steam Play for enjoying Windows games on Linux.

    For all the great changes and new features building up in Linux 5.15, unfortunately, this looks to be another kernel that will lack FUTEX2. The latest revision of the FUTEX2 patches were posted this weekend and now being half-way through the merge window is certainly too late to see it review, additional testing, and submitted in time.

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