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pmap_page_exists_quick.9freebsd
Langue: en
Version: 307902 (debian - 07/07/09)
Section: 9 (Appels noyau Linux)
BSD mandoc
NAME
pmap_page_exists_quick - determine if a page exists in a physical mapSYNOPSIS
In sys/param.h In vm/vm.h In vm/pmap.h Ft boolean_t Fn pmap_page_exists_quick pmap_t pmap vm_page_t mDESCRIPTION
The Fn pmap_page_exists_quick function is used to quickly determine if the page Fa m exists in the physical map Fa 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 TRUE be returned for a small subset of pmaps for proper page aging.RETURN VALUES
The Fn pmap_page_exists_quick returns TRUE only if the PV entry for the physical map Fa pmap is one of the first 16 PVs linked from the page Fa m .SEE ALSO
pmap(9)AUTHORS
This manual page was written by An Bruce M Simpson Aq bms@spc.org .Contenus ©2006-2024 Benjamin Poulain
Design ©2006-2024 Maxime Vantorre