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 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)

AUTHORS

       This manual page was written by Bruce M Simpson <bms@spc.org>.

Debian                                            July 17, 2014                              PMAP_IS_MODIFIED(9)