Copyright (c) 2003 Bruce M Simpson <bms@spc.org>
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$FreeBSD: releng/11.0/share/man/man9/pmap_is_modified.9 268803 2014-07-17 17:41:32Z alc $
.Dd July 17, 2014 .Dt PMAP_IS_MODIFIED 9 .Os .Sh NAME .Nm pmap_is_modified , .Nm pmap_ts_modified .Nd return information about physical pages .Sh SYNOPSIS n sys/param.h n vm/vm.h n vm/pmap.h .Ft boolean_t .Fn pmap_is_modified "vm_page_t m" .Ft int .Fn pmap_ts_referenced "vm_page_t m" .Sh DESCRIPTION The .Fn pmap_is_modified and .Fn pmap_ts_referenced functions return information about physical pages. .Sh RETURN VALUES The .Fn pmap_is_modified function returns the status of the .Dq "page modified" bit for the physical page .Fa m .
p 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. .Sh SEE ALSO .Xr pmap 9 , .Xr pmap_clear_modify 9 .Sh AUTHORS This manual page was written by .An Bruce M Simpson Aq Mt bms@spc.org .