LKML News v6.0-rc4

[RFC PATCH 00/28] per-VMA locks proposal (Suren Baghdasaryan)

https://lkml.kernel.org/r/20220829212531.3184856-1-surenb@google.com

The VMA lock scalability issue is still there. This RFC patchset shows the proof of the concept for the per-VMA lock idea, which was discussed in LSF/MM this year, as part of the SPF discussion.

[RFC PATCH 00/30] Code tagging framework and applications (Suren Baghdasaryan)

https://lkml.kernel.org/r/20220830214919.53220-1-surenb@google.com

This RFC patchset introduces code tagging framework which can identify a specific location in the source code when compile. Using the framework, we can do memory allocation tracking, dynamic fault injection, latency tracking, etc.

[GIT PULL] slab fix for 6.0-rc4 (Vlastimil Babka)

https://lkml.kernel.org/r/72c237d6-df43-fc3b-4948-6d9a34ef3ba8@suse.cz

Vlastimil sent a slab fix pull request to Linus for v6.0-rc4.

[Resend RFC PATCH] mm: introduce __GFP_TRACKLEAK to track in-kernel allocation (Zhaoyang Huang)

https://lkml.kernel.org/r/1662116347-17649-1-git-send-email-zhaoyang.huang@unisoc.com

It’s hard to debug memory leaks in kthread and drivers as they could fetch memory via direct alloc_pages() calls. This patches solves this by introducing yet another GFP flag, __GFP_TRACELEAK and reuse kmemleak mechanism.

Linux 6.0-rc4 (Linus Torvalds)

https://lkml.kernel.org/r/CAHk-=wiqix9N5P0BXrSSOXjPZxMh=wDDRJ3sgf=hutoTUx0nZQ@mail.gmail.com

Another normal week has passed and the fourth release candidate for Linux v6.0 has released.

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 2020-09-05 | ~/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 -rc4 releases in the last two years.