Updated XZ Code Lands In Linux 6.12

Written by Michael Larabel in Linux Kernel on 22 September 2024 at 12:00 AM EDT. 18 Comments
LINUX KERNEL
The kernel patches collected by Andrew Morton were upstreamed today for the Linux 6.12 kernel. Among those changes are pulling in the updated XZ Embedded code.

Merged for Linux 6.12 are the XZ Embedded patches that have been under review the past several months. The revised XZ Embedded code shifts to the BSD Zero Clause License, new ARM64 and RISC-V BCJ filters, updated documentation, and other enhancements for in-kernel users of this XZ compression code. ARM64 and RISC-V also now enjoy Image.xz compression support.

Linux 6.12 XZ patches


The patch for using only single-threaded mode rather than multi-threaded mode is for the kernel image compression and was done since it provides slightly better compression while using less RAM. The 128MB dictionary size also helps with offering the best XZ compression for the kernel image.

The merge updating the XZ code also has a variety of other bug fixes and other random updates throughout. Among those changes are updates to the seldom talked about NILFS2 file-system.
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