vm_aref Struct Reference

An anon's reference to a page (an aref). More...

#include <vm.h>

Data Fields
struct vm_page *	vm_page
	the page
size_t	ref
	how many anons have the aref
uint32_t	flags
	its flags (VM_COPY)

Detailed Description

An anon's reference to a page (an aref).

Anons that a fork shares share their arefs, and ref counts them, so the page is copied before one of them writes to it.

Definition at line 107 of file vm.h.

Field Documentation

flags

uint32_t vm_aref::flags

its flags (VM_COPY)

Definition at line 115 of file vm.h.

Referenced by pf_anon(), and pf_present().

ref

size_t vm_aref::ref

how many anons have the aref

Definition at line 112 of file vm.h.

Referenced by pf_anon(), pf_object(), pf_present(), pf_zero(), vm_anon_copy_arefs(), vm_anon_destroy(), and vm_aref_decref().

vm_page

struct vm_page* vm_aref::vm_page

the page

Definition at line 109 of file vm.h.

Referenced by pf_anon(), pf_object(), pf_present(), pf_zero(), vm_anon_destroy(), and vm_aref_eq().

---

The documentation for this struct was generated from the following file:

• kernel/include/mm/vm.h