LKML News v6.16-rc1

[PATCH RFC] mm: use per_vma lock for MADV_DONTNEED (Barry Song)

https://lore.kernel.org/20250527044145.13153-1-21cnbao@gmail.com

Barry posted an RFC to make MADV_DONTNEED madvise() calls to use per-vma lock when the region is in a signle vma.

[PATCH v4] tools/mm: Add script to display page state for a given PID and VADDR (Ye Liu)

https://lore.kernel.org/20250528091543.355386-1-ye.liu@linux.dev

Ye posted fourth version of a patch for drgn script that shows detailed information of page for a given virtual address.

[DISCUSSION] proposed mctl() API (Lorenzo Stoakes)

https://lore.kernel.org/85778a76-7dc8-4ea8-8827-acb45f74ee05@lucifer.local

Lorenzo started a discussion thread for a new syscall, mctl(), which is for making mm_struct level behavior control.

How should we RCU-free folios? (Matthew Wilcox)

https://lore.kernel.org/aDh3INMq0_j7pgwU@casper.infradead.org

Matthew shares his thought about RCU-free-ing folios for a world that folios become no more head pages.