vm_page_dontneed -- indicate that a page is not needed anymore
The vm_page_dontneed() function advises the VM system that the given page
is no longer required. If the page is already in the inactive queue or
in the cache queue, this function does nothing; otherwise the page is
Note that vm_page_dontneed() does not necessarily deactivate a page, but
instead implements an algorithm that attempts to prevent small objects
from having their pages reused too quickly, and large objects from flushing
smaller ones from the queues as their pages are released.
This manual page was written by Chad David <email@example.com>.
FreeBSD 5.2.1 July 30, 2001 FreeBSD 5.2.1 [ Back ]