tree bc56cc023da3467447b0aecd30c0516881d53992
parent 51b1bd2ace1595b72956224deda349efa880b693
author Rik van Riel <riel@redhat.com> 1281399588 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1281411902 -0700

rmap: add exclusive page to private anon_vma on swapin

On swapin it is fairly common for a page to be owned exclusively by one
process.  In that case we want to add the page to the anon_vma of that
process's VMA, instead of to the root anon_vma.

This will reduce the amount of rmap searching that the swapout code needs
to do.

Signed-off-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>