table of contents
VM_PAGE_DONTNEED(9) | Kernel Developer's Manual | VM_PAGE_DONTNEED(9) |
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¶
Thevm_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>.July 30, 2001 | Linux 4.19.0-10-amd64 |