pmap_is_modified (9)

Leading comments

Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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(The comments found at the beginning of the groff file "man9/pmap_is_modified.9freebsd".)

NAME

pmap_is_modified pmap_ts_modified - return information about physical pages

SYNOPSIS

In sys/param.h In vm/vm.h In vm/pmap.h Ft boolean_t Fn pmap_is_modified vm_page_t m Ft int Fn pmap_ts_referenced vm_page_t m

DESCRIPTION

The Fn pmap_is_modified and Fn pmap_ts_referenced functions return information about physical pages.

RETURN VALUES

The Fn pmap_is_modified function returns the status of the ``page modified'' bit for the physical page Fa m .

The Fn pmap_ts_referenced function returns a count of reference bits for a page Fa 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_modify9, pmap_clear_reference9

AUTHORS

This manual page was written by An Bruce M Simpson Aq bms@spc.org .