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.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.
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.\" $FreeBSD: src/share/man/man9/vm_page_wire.9,v 1.3.22.1.6.1 2010/12/21 17:09:25 kensmith Exp $
.\"
.Dd July 13, 2001
.Dt VM_PAGE_WIRE 9
.Os
.Sh NAME
.Nm vm_page_wire ,
.Nm vm_page_unwire
.Nd "wire and unwire pages"
.Sh SYNOPSIS
.In sys/param.h
.In vm/vm.h
.In vm/vm_page.h
.Ft void
.Fn vm_page_wire "vm_page_t m"
.Ft void
.Fn vm_page_unwire "vm_page_t m" "int activate"
.Sh DESCRIPTION
The
.Fn vm_page_wire
function increments the wire count on a page, and removes it from
whatever queue it is on.
.Pp
The
.Fn vm_page_unwire
function releases one of the wirings on the page.
When
.Va write_count
reaches zero the page is placed back onto either the active queue
(if
.Fa activate
is non-zero) or onto the inactive queue (if
.Fa activate
is zero).
If the page is unmanaged
.Dv ( PG_UNMANAGED
is set) then the page is left on
.Dv PQ_NONE .
.Sh AUTHORS
This manual page was written by
.An Chad David Aq davidc@acns.ab.ca .