pmap_is_modified(9)
NAME
- pmap_is_modified, pmap_ts_modified - return information
- about physical
pages
SYNOPSIS
#include <sys/param.h>
#include <vm/vm.h>
#include <vm/pmap.h>
boolean_t
pmap_is_modified(vm_page_t m);
int
pmap_ts_referenced(vm_page_t m);
DESCRIPTION
- The pmap_is_modified() and pmap_ts_referenced() functions
- return information about physical pages.
RETURN VALUES
- The pmap_is_modified() function returns the status of the
- ``page
modified'' bit for the physical page m. - The pmap_ts_referenced() function returns a count of refer
- ence bits for a
page m, clearing those bits. It is not necessary for every - reference bit
to be cleared, but it is necessary that 0 only be returned - when there are
no remaining reference bits set on the page.
SEE ALSO
pmap(9), pmap_clear_modify(9), pmap_clear_reference(9)
AUTHORS
- This manual page was written by Bruce M Simpson
- <bms@spc.org>.
- BSD July 21, 2003