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|PMAP_PAGE_EXISTS_QUICK(9)||Kernel Developer's Manual||PMAP_PAGE_EXISTS_QUICK(9)|
NAME¶pmap_page_exists_quick — determine if a page exists in a physical map
#include <vm/pmap.h> boolean_t
pmap_page_exists_quick(pmap_t pmap, vm_page_t m);
DESCRIPTION¶The pmap_page_exists_quick() function is used to quickly determine if the page m exists in the physical map pmap. It is typically called from the VM paging code.
IMPLEMENTATION NOTES¶The PV count used above may be changed upwards or downwards in future; it is only necessary that
TRUEbe returned for a small subset of pmaps for proper page aging.
RETURN VALUES¶The pmap_page_exists_quick() returns
TRUEonly if the PV entry for the physical map pmap is one of the first 16 PVs linked from the page m.
AUTHORS¶This manual page was written by Bruce M Simpson ⟨firstname.lastname@example.org⟩.
|July 21, 2003||Debian|