diff options
| author | Johannes Weiner <[email protected]> | 2009-01-06 14:39:17 -0800 |
|---|---|---|
| committer | Linus Torvalds <[email protected]> | 2009-01-06 15:59:00 -0800 |
| commit | 4917e5d0499b5ae7b26b56fccaefddf9aec9369c (patch) | |
| tree | 78f55c2d3019d1811b5447cae130c0f647916a37 /include/linux | |
| parent | 64cdd548ffe26849d4cd113ac640f60606063b14 (diff) | |
mm: more likely reclaim MADV_SEQUENTIAL mappings
File pages mapped only in sequentially read mappings are perfect reclaim
canditates.
This patch makes these mappings behave like weak references, their pages
will be reclaimed unless they have a strong reference from a normal
mapping as well.
It changes the reclaim and the unmap path where they check if the page has
been referenced. In both cases, accesses through sequentially read
mappings will be ignored.
Benchmark results from KOSAKI Motohiro:
http://marc.info/?l=linux-mm&m=122485301925098&w=2
Signed-off-by: Johannes Weiner <[email protected]>
Signed-off-by: Rik van Riel <[email protected]>
Acked-by: KOSAKI Motohiro <[email protected]>
Cc: Nick Piggin <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Diffstat (limited to 'include/linux')
0 files changed, 0 insertions, 0 deletions