Man page or keyword search:   man All Sections 1 - General Commands 2 - System Calls 3 - Subroutines, Functions 4 - Special Files 5 - File Formats 6 - Games and Screensavers 7 - Macros and Conventions 8 - Maintenence Commands 9 - Kernel Interface New Commands Server 4.4BSD AIX Alpinelinux Archlinux Aros BSDOS BSDi Bifrost CentOS Cygwin Darwin Debian DigitalUNIX DragonFly ElementaryOS Fedora FreeBSD Gentoo GhostBSD HP-UX Haiku Hurd IRIX Inferno JazzOS Kali Knoppix LinuxMint MacOSX Mageia Mandriva Manjaro Minix MirBSD NeXTSTEP NetBSD OPENSTEP OSF1 OpenBSD OpenDarwin OpenIndiana OpenMandriva OpenServer OpenSuSE OpenVMS Oracle PC-BSD Peanut Pidora Plan9 QNX Raspbian RedHat Scientific Slackware SmartOS Solaris SuSE SunOS Syllable Tru64 UNIXv7 Ubuntu Ultrix UnixWare Xenix YellowDog aLinux   9747 pages apropos Keyword Search (all sections) Output format html ascii pdf view pdf save postscript

VM_PAGE_PROTECT(9)	 BSD Kernel Developer's Manual	    VM_PAGE_PROTECT(9)

NAME
     vm_page_protect — lower a page's protection

SYNOPSIS
     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/vm_page.h>

     void
     vm_page_protect(vm_page_t mem, int prot);

DESCRIPTION
     The vm_page_protect() function lowers a page's protection.	 The protec‐
     tion is never raised by this function; therefore, if the page is already
     at VM_PROT_NONE, the function does nothing.

     Its arguments are:

     mem   The page whose protection is lowered.

     prot  The protection the page should be reduced to.  If VM_PROT_NONE is
	   specified, then the PG_WRITABLE and PG_MAPPED flags are cleared and
	   the pmap_page's protection is set to VM_PROT_NONE.  If VM_PROT_READ
	   is specified, then the PG_WRITABLE flag is cleared and the
	   pmap_page's protection is set to VM_PROT_READ.

     Higher protection requests are ignored.

AUTHORS
     This manual page was written by Chad David ⟨davidc@acns.ab.ca⟩.

BSD				 July 14, 2001				   BSD

Vote for polarhome