VSLOCK(9) BSD Kernel Developer's Manual VSLOCK(9)NAME
vslock, vsunlock — lock/unlock user space addresses in memory
SYNOPSIS
#include <sys/types.h>
#include <vm/vm.h>
#include <vm/vm_extern.h>
void
vslock(caddr_t addr, u_int len);
void
vsunlock(caddr_t addr, u_int len);
DESCRIPTION
The vslock() and vsunlock() functions respectively lock and unlock a
range of addresses belonging to the currently running process into mem‐
ory. The actual amount of memory locked is a multiple of the machine's
page size. The starting page number is computed by truncating addr to
the nearest preceding page boundary, and by rounding up addr + len to the
next page boundary. The process context to use for this operation is
taken from the global variable curproc.
BUGS
The process pointer should be passed in as an argument.
BSD June 15, 1996 BSD
