5.7. Global Page Management
Pages are the fundamental unit of physical memory in the Solaris memory management subsystem. In this section, we discuss how pages are structured, how they are located, and how free lists manage pools of pages within the system.
5.7.1. Pages—The Basic Unit of Solaris Memory
Physical memory is divided into pages. Every active (not free) page in the Solaris kernel is a mapping between a file (vnode) and memory; the page can be identified with a vnode pointer and the page size offset within that vnode. A page's identity is its vnode/offset pair. The vnode/offset pair is the backing store for the page and represents the file and offset that the page is mapping.
The hardware address translation (HAT) and address space ...