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authorKOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>2009-01-07 18:08:16 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2009-01-08 08:31:07 -0800
commitc9f299d9862deadf9fbee3ca28d915fdb006975a (patch)
tree2979e1eb8fe7e15369f01bcb405a029c18ca3e66 /mm
parent6e9015716ae9b59e9635d692fddfcfb9582c146c (diff)
mm: add zone nr_pages helper function
Add zone_nr_pages() helper function. It is used by a later patch. This patch doesn't have any functional change. Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Acked-by: Rik van Riel <riel@redhat.com> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Daisuke Nishimura <nishimura@mxp.nes.nec.co.jp> Cc: Hugh Dickins <hugh@veritas.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>
Diffstat (limited to 'mm')
-rw-r--r--mm/vmscan.c15
1 files changed, 11 insertions, 4 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 03ca923c665..6827d35954f 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -136,6 +136,13 @@ static struct zone_reclaim_stat *get_reclaim_stat(struct zone *zone,
return &zone->reclaim_stat;
}
+static unsigned long zone_nr_pages(struct zone *zone, struct scan_control *sc,
+ enum lru_list lru)
+{
+ return zone_page_state(zone, NR_LRU_BASE + lru);
+}
+
+
/*
* Add a shrinker callback to be called from the vm
*/
@@ -1365,10 +1372,10 @@ static void get_scan_ratio(struct zone *zone, struct scan_control *sc,
return;
}
- anon = zone_page_state(zone, NR_ACTIVE_ANON) +
- zone_page_state(zone, NR_INACTIVE_ANON);
- file = zone_page_state(zone, NR_ACTIVE_FILE) +
- zone_page_state(zone, NR_INACTIVE_FILE);
+ anon = zone_nr_pages(zone, sc, LRU_ACTIVE_ANON) +
+ zone_nr_pages(zone, sc, LRU_INACTIVE_ANON);
+ file = zone_nr_pages(zone, sc, LRU_ACTIVE_FILE) +
+ zone_nr_pages(zone, sc, LRU_INACTIVE_FILE);
free = zone_page_state(zone, NR_FREE_PAGES);
/* If we have very few page cache pages, force-scan anon pages. */