[$] Two approaches to better kernel samepage merging

The kernelsamepage merging (KSM) subsystem works by finding pages in memory withthe same contents, then replacing the duplicated copies with a single,shared copy. KSM can improve memory utilization in a system, but has someproblems as well. In two memory-management-track sessions at the 2025Linux Storage, Filesystem, Memory-Management, and BPF Summit, MathieuDesnoyers and Sourav Panda proposed improvements to KSM tomake it work better for specific use cases.