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-.\"
-.\" Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
-.\" All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\" $FreeBSD$
-.\"
-.Dd July 21, 2003
-.Dt PMAP_PREFAULT 9
-.Sh NAME
-.Nm pmap_prefault
-.Nd cluster page faults into a process's address space
-.Sh SYNOPSIS
-.In sys/param.h
-.In vm/vm.h
-.In vm/pmap.h
-.Ft void
-.Fn pmap_prefault "pmap_t pmap" "vm_offset_t addra" "vm_map_entry_t entry"
-.Sh DESCRIPTION
-The
-.Fn pmap_prefault
-function provides a means of clustering pagefaults into a process's
-address space.
-It operates upon the physical map
-.Fa pmap .
-The
-.Fa entry
-argument specifies the entry to be prefaulted; the
-.Fa addra
-argument specifies the beginning of the mapping in the process's virtual
-address space.
-.Pp
-It is typically called by
-.Fn vm_fault
-after the first page fault.
-It benefits the
-.Fn exec
-system call by eliminating repetitive calls to
-.Fn vm_fault ,
-which would otherwise be made to bring the process's executable pages
-into physical memory.
-.Sh SEE ALSO
-.Xr execve 2 ,
-.Xr pmap 9
-.Sh AUTHORS
-This manual page was written by
-.An Bruce M Simpson Aq bms@spc.org .