LKML News v6.1-rc8

[PATCH 1/2] lockdep: allow instrumenting lockdep.c with KMSAN (Alexander Potapenko)

https://lkml.kernel.org/r/20221128094541.2645890-1-glider@google.com

Lockdep and KMSAN are known to work together nowadays, though it could make kernel run slower. This patch fixes KMSAN’s false positives on wq_head->lock->dep_map.

[PATCH] mm/huge_memory: add TRANSPARENT_HUGEPAGE_NEVER for THP (ye xingchen)

https://lkml.kernel.org/r/202211301651462590168@zte.com.cn

This patch adds a new kernel config called TRANSPARENT_HUGEPAGE_NEVER, which will set the value of /sys/kernel/mm/transparent_hugepage/enabled [never].

[RFC PATCH v2] mm: Add nodes= arg to memory.reclaim (Mina Almasry)

https://lkml.kernel.org/r/20221130020328.1009347-1-almasrymina@google.com

This RFC patch adds nodes= argument to memory cgroup’s memory.reclaim for specifying memory node to reclaim.

[RFC] Improving userfaultfd scalability for live migration (James Houghton)

https://lkml.kernel.org/r/CADrL8HVDB3u2EOhXHCrAgJNLwHkj2Lka1B_kkNb0dNwiWiAN_Q@mail.gmail.com

James is suggesting some ways for improving userfaultfd performance for post-copy live migration.

Linux 6.1-rc8 (Linus Torvalds)

https://lkml.kernel.org/r/CAHk-=wgyXu4D44b8wQU9dpTYUft6WhZ0wr3nV1fziy6k0GwCCw@mail.gmail.com

As expected, Linus released the eighth release candidate of Linux v6.1. Fortunately, it started calming down. If this week is also quiet or even quieter, we will show Linux 6.1 next Sunday.

Below is the diffstat of the releases in the last two years.

Note that the y-axis is in logarithm. I draw it using https://github.com/sjp38/relstat and https://github.com/sjp38/lazybox using below command:

$ relstat.py --since 2020-12-05 | ~/lazybox/gnuplot/plot.py \
    --data_fmt table --type labeled-lines --xtics_rotate -90 \
    --font "Times New Roman, 5pt" --ylog --pointsize 0.3

And, below is the diffstat of the -rc8 releases in the last two years.