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authoralc <alc@FreeBSD.org>2011-07-09 18:09:57 +0000
committeralc <alc@FreeBSD.org>2011-07-09 18:09:57 +0000
commit17591f511aadb2ec519d763bd2bac145f7022bb5 (patch)
treeac6622ef6995d928e28eacb96ea1b4617ca06ff9 /share
parent0bfba501309ac0e67d4419fe93fd5934bc1b7bf2 (diff)
downloadFreeBSD-src-17591f511aadb2ec519d763bd2bac145f7022bb5.zip
FreeBSD-src-17591f511aadb2ec519d763bd2bac145f7022bb5.tar.gz
Oops. These changes should have been included in r223891.
MFC after: 1 week
Diffstat (limited to 'share')
-rw-r--r--share/man/man9/vm_page_protect.975
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diff --git a/share/man/man9/vm_page_protect.9 b/share/man/man9/vm_page_protect.9
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-.\"
-.\" Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. 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(s), this list of conditions and the following disclaimer as
-.\" the first lines of this file unmodified other than the possible
-.\" addition of one or more copyright notices.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\" notice(s), 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 COPYRIGHT HOLDER(S) ``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 COPYRIGHT HOLDER(S) 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 14, 2001
-.Dt VM_PAGE_PROTECT 9
-.Os
-.Sh NAME
-.Nm vm_page_protect
-.Nd "lower a page's protection"
-.Sh SYNOPSIS
-.In sys/param.h
-.In vm/vm.h
-.In vm/vm_page.h
-.Ft void
-.Fn vm_page_protect "vm_page_t mem" "int prot"
-.Sh DESCRIPTION
-The
-.Fn vm_page_protect
-function lowers a page's protection.
-The protection is never raised by this function; therefore, if the page is
-already at
-.Dv VM_PROT_NONE ,
-the function does nothing.
-.Pp
-Its arguments are:
-.Bl -tag -width ".Fa prot"
-.It Fa mem
-The page whose protection is lowered.
-.It Fa prot
-The protection the page should be reduced to.
-If
-.Dv VM_PROT_NONE
-is specified, then the
-.Dv PG_WRITABLE
-and
-.Dv PG_MAPPED
-flags are cleared and the pmap_page's protection is set to
-.Dv VM_PROT_NONE .
-If
-.Dv VM_PROT_READ
-is specified, then the
-.Dv PG_WRITABLE
-flag is cleared and the pmap_page's protection is set to
-.Dv VM_PROT_READ .
-.El
-.Pp
-Higher protection requests are ignored.
-.Sh AUTHORS
-This manual page was written by
-.An Chad David Aq davidc@acns.ab.ca .
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