vm_page_busy(9)

NAME

vm_page_busy, vm_page_flash, vm_page_wakeup - handle the

busying and
unbusying of a page

SYNOPSIS

#include <sys/param.h>
#include <vm/vm.h>
#include <vm/vm_page.h>
void
vm_page_busy(vm_page_t m);
void
vm_page_flash(vm_page_t m);
void
vm_page_wakeup(vm_page_t m);

DESCRIPTION

These functions handle the busying, unbusying and notifica

tion of the
unbusying of a page.

vm_page_busy() sets the PG_BUSY flag in the page.

vm_page_flash() checks to see if there is anybody waiting on

the page
(PG_WANTED will be set), and if so, clears the PG_WANTED

flag and notifies whoever is waiting via wakeup().

vm_page_wakeup() clears the PG_BUSY flag on the page, and

calls
vm_page_flash() in case somebody has been waiting for it.

SEE ALSO

vm_page_sleep_busy(9), wakeup(9)

AUTHORS

This manual page was written by Chad David <davidc@ac

ns.ab.ca>.

BSD July 14, 2001

BSD