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[PATCH] zone_reclaim: do not unmap file backed pages

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zone_reclaim should leave that to the real swapper.  We are only interested
in evicting unmapped pages.

Signed-off-by: Christoph Lameter <clameter@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This commit is contained in:
Christoph Lameter 2006-02-01 03:05:32 -08:00 committed by Linus Torvalds
parent 4e6a510a74
commit aa3f18b339
1 changed files with 6 additions and 0 deletions
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6
mm/vmscan.c
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@ -477,6 +477,12 @@ static int shrink_list(struct list_head *page_list, struct scan_control *sc)
* processes. Try to unmap it here.
*/
if (page_mapped(page) && mapping) {
/*
* No unmapping if we do not swap
*/
if (!sc->may_swap)
goto keep_locked;
switch (try_to_unmap(page)) {
case SWAP_FAIL:
goto activate_locked;