[$] Separating memory descriptors from struct page

The kernel's memory-management subsystem is currently partway through amulti-year project to replace the page structure (which representsa page of physical memory) with memorydescriptors. At the 2026 Linux Storage,Filesystem, Memory Management, and BPF Summit, Vishal Moola ran afast-paced session in the memory-management track to describe the currentstate of that work and what is likely to happen next.