Node:Locking Pages, Next:Resizing the Data Segment, Previous:Memory Allocation, Up:Memory
You can tell the system to associate a particular virtual memory page with a real page frame and keep it that way -- i.e. cause the page to be paged in if it isn't already and mark it so it will never be paged out and consequently will never cause a page fault. This is called locking a page.
The functions in this chapter lock and unlock the calling process' pages.