[$] Yet another way to configure transparent huge pages

Transparent huge pages (THPs) are, theoretically, supposed to allow processes tobenefit from larger page sizes without changes to their code. This does work,but the performance impacts from THPs are not always a benefit, so systemadministrators with specific knowledge of their workloads may want the abilityto fine-tune THPs to the application. On May15, Usama Arifshared a patch set that would add aprctl() option for setting THP defaults for a process; that patchset has sparked discussion about whether such a setting is a good fit forprctl(), and what alternative designs may work instead.