NAME

     vm_page_dontneed — indicate that a page is not needed anymore

SYNOPSIS

     #include <sys/param.h>
     #include <vm/vm.h>
     #include <vm/vm_page.h>

     void
     vm_page_dontneed(vm_page_t m);

DESCRIPTION

     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 deactivated.

     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.

SEE ALSO

     vm_page_deactivate(9)

AUTHORS

     This manual page was written by Chad David <davidc@acns.ab.ca>.