LKML News v6.4

[PATCH] mm/memory_hotplug.c: don’t fail hot unplug quite so eagerly (John Hubbard)

https://lkml.kernel.org/r/20230620011719.155379-1-jhubbard@nvidia.com

Some device drivers add and remove memory to the system via memory hot [un]plog. Nevertheless, the ungplugging could fail easily, especially for the pending signal on the process. This patch simply remove the signal check error.

[PATCH v2] mm/min_free_kbytes: modify min_free_kbytes calculation rules (liuq)

https://lkml.kernel.org/r/20230621073912.21747-1-liuq131@chinatelecom.cn

This patch adjusts min_free_kbytes calculation so that ZONE_NORMAL is unnecessarily be too small when ZONE_MOVABLE exists.

[GIT PULL] hotfixes against 6.4-rc7 (Andrew Morton)

https://lkml.kernel.org/r/20230620123828.813b1140d9c13af900e8edb3@linux-foundation.org

Andrew sent hotfixes that aimed to be applied on Linux v6.4-rc7 to Linus.

[RFC PATCH v2 0/6] mm: working set reporting (Yuanchu Xie)

https://lkml.kernel.org/r/20230621180454.973862-1-yuanchu@google.com

Yuanchu sent the second version of the RFC for MGLRU-based working set reporting.

[PATCH v20 0/5] Implement IOCTL to get and optionally clear info about PTEs (Muhammad Usama Anjum)

https://lkml.kernel.org/r/20230621072404.2918101-1-usama.anjum@collabora.com

Microsoft Windows provides GetWriteWatch() system call, which retries the virtual address of the pages that are written to. This patchset implements similar one in an efficient manner for Linux, with the name PAGEMAP_SCAN_IOCTL.

Linux 6.4 (Linus Torvalds)

https://lkml.kernel.org/r/CAHk-=wi7fwNWfqj-QQqEfZTUOB4bbKT8QiEUDHoPk0ecuYA7cA@mail.gmail.com

After the seven releae candidate kernels for 6.4, the last wee kwas also quite normal with some netfilter fixes, mm reverts, and tracing updates. So Linux v6.4 is out. Linus already received 15 pull requests for v6.5.

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 2021-04-24 | ~/lazybox/gnuplot/plot.py \
    --data_fmt table --type labeled-lines --xtics_rotate -90 \
    --font "Times New Roman, 5pt" --ylog --pointsize 0.3