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mm: make shrink_page_list with pages work from multiple zones

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Shrink_page_list expects all pages come from a same zone
but it's too limited to use.

This patch removes the dependency so next patch can use
shrink_page_list with pages from multiple zones.

Change-Id: I34469b7f0a79f2b79e30e40033ba8b3e1dd5f2d0
Signed-off-by: Minchan Kim <minchan@kernel.org>
Patch-mainline: linux-mm @ 9 May 2013 16:21:25
[vinmenon@codeaurora.org: trivial merge conflict fixes]
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
This commit is contained in:
Minchan Kim 2013-05-09 16:21:25 +09:00 committed by Vinayak Menon
parent fc2a24ebb1
commit 21bb0e1a7b
1 changed files with 3 additions and 2 deletions
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5
mm/vmscan.c
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@ -829,7 +829,8 @@ static unsigned long shrink_page_list(struct list_head *page_list,
goto keep;
VM_BUG_ON(PageActive(page));
VM_BUG_ON(page_zone(page) != zone);
if (zone)
VM_BUG_ON(page_zone(page) != zone);
sc->nr_scanned++;
@ -993,7 +994,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
*/
if (page_is_file_cache(page) &&
(!current_is_kswapd() ||
!zone_is_reclaim_dirty(zone))) {
(zone && !zone_is_reclaim_dirty(zone)))) {
/*
* Immediately reclaim when written back.
* Similar in principal to deactivate_page()