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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), pmap_clear_reference(9)

AUTHORS

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