Copyright (c) 2003 Bruce M Simpson <firstname.lastname@example.org>
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(The comments found at the beginning of the groff file "man9/pmap_page_exists_quick.9freebsd".)
- determine if a page exists in a physical map
Fn pmap_page_exists_quick pmap_t pmap vm_page_t m
function is used to quickly determine if the page
exists in the physical map
Fa pmap .
It is typically called from the VM paging code.
The PV count used above may be changed upwards or downwards in future;
it is only necessary that
be returned for a small subset of pmaps for proper page aging.
only if the PV entry for the physical map
is one of the first 16 PVs linked from the page
Fa m .
This manual page was written by
An Bruce M Simpson Aq email@example.com .