Linux 5.3: XFS, Networking and NVIDIA's Graphics Driver
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XFS Gets Cleaned Up In Linux 5.3 Kernel Development Activity
While not too eventful on the end-user feature front, the XFS file-system has seen another round of clean-ups with the ongoing Linux 5.3 merge window.
XFS maintainer Darrick Wong characterized the feature work for XFS in Linux 5.3 as "significant amounts of consolidations and cleanups in the log code; restructuring of the log to issue struct bios directly; new bulkstat ioctls to return v5 fs inode information (and fix all the padding problems of the old ioctl); the beginnings of multithreaded inode walks (e.g. quotacheck); and a reduction in memory usage in the online scrub code leading to reduced runtimes."
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Networking Changes For Linux 5.3 Bring New Google Driver But No WireGuard
The networking subsystem updates were sent out on Wednesday for the Linux 5.3 kernel and include a bunch of improvements to many different drivers.
The networking changes are heavy as usual and include improvements to pretty much all of the common networking drivers.
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NVIDIA's Graphics Driver Will Run Into Problems With Linux 5.3 On IBM POWER
For those using the NVIDIA proprietary graphics driver on an IBM POWER system, it could be a while before seeing Linux 5.3+ kernel support. Upstream has removed code depended upon by the NVIDIA binary driver for supporting the POWER architecture and as is the case they don't care that it will break NVIDIA driver support since it's binary/out-of-tree.
The POWER changes for Linux 5.3 remove NPU DMA code. In the pull request they do acknowledge this DMA code is "used by the out-of-tree Nvidia driver, as well as some other functions only used by drivers that haven't (yet?) made it upstream."
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