Editing Memory paging (section)

=== Free page queue, stealing, and reclamation ===
The free page queue is a list of page frames that are available for assignment. Preventing this queue from being empty minimizes the computing necessary to service a page fault. Some operating systems periodically look for pages that have not been recently referenced and then free the page frame and add it to the free page queue, a process known as "page stealing". Some operating systems{{efn|For example, [[MVS]] (Multiple Virtual Storage).}} support ''page reclamation''; if a program commits a page fault by referencing a page that was stolen, the operating system detects this and restores the page frame without having to read the contents back into RAM.