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PMAP_IS_MODIFIED(9) | Kernel Developer's Manual | 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¶
Thepmap_is_modified
() and
pmap_ts_referenced
() functions return
information about physical pages.
RETURN VALUES¶
Thepmap_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 reference 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⟩.July 21, 2003 | Debian |