bionic (9) vm_page_dontneed.9freebsd.gz

Provided by: freebsd-manpages_11.1-3_all bug

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>.