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-rw-r--r--mm/vmscan.c20
1 files changed, 20 insertions, 0 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 45983af1de3d..f75d924cb4f4 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1291,6 +1291,26 @@ static void shrink_active_list(unsigned long nr_pages, struct zone *zone,
1291 pagevec_release(&pvec); 1291 pagevec_release(&pvec);
1292} 1292}
1293 1293
1294/**
1295 * inactive_anon_is_low - check if anonymous pages need to be deactivated
1296 * @zone: zone to check
1297 *
1298 * Returns true if the zone does not have enough inactive anon pages,
1299 * meaning some active anon pages need to be deactivated.
1300 */
1301static int inactive_anon_is_low(struct zone *zone)
1302{
1303 unsigned long active, inactive;
1304
1305 active = zone_page_state(zone, NR_ACTIVE_ANON);
1306 inactive = zone_page_state(zone, NR_INACTIVE_ANON);
1307
1308 if (inactive * zone->inactive_ratio < active)
1309 return 1;
1310
1311 return 0;
1312}
1313
1294static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan, 1314static unsigned long shrink_list(enum lru_list lru, unsigned long nr_to_scan,
1295 struct zone *zone, struct scan_control *sc, int priority) 1315 struct zone *zone, struct scan_control *sc, int priority)
1296{ 1316{