The
pmap_change_wiring ();
function changes the wiring attribute for the page at virtual address
Fa va
in the physical map
Fa pmap .
A wired page gets its name from being
``wired''
into the system page tables so that it will not be paged out.
The mapping must already exist in the
Fa pmap .
If
Fa wired
is
TRUE
the map's wired page count will be incremented; if
FALSE
it will be decremented.
It is typically called by the
vm_fault_unwire ();
function.
