This patch removes an unnecessary loop.
Signed-off-by: Mel Gorman <mgor...@suse.de>
---
mm/vmscan.c | 31 +++++++++++++------------------
1 file changed, 13 insertions(+), 18 deletions(-)
diff --git a/mm/vmscan.c b/mm/vmscan.c
index f0eed2e6883c..975c315f1bf5 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -3182,30 +3182,25 @@ static unsigned long balance_pgdat(pg_data_t *pgdat,
int order,
*/
clear_bit(PGDAT_CONGESTED,
&zone->zone_pgdat->flags);
clear_bit(PGDAT_DIRTY,
&zone->zone_pgdat->flags);
+
+ /*
+ * If any zone is currently balanced then
kswapd will
+ * not call compaction as it is expected that
the
+ * necessary pages are already available.
+ */
+ if (pgdat_needs_compaction &&
+ zone_watermark_ok(zone, order,
+ low_wmark_pages(zone),
+ *classzone_idx, 0)) {
+ pgdat_needs_compaction = false;
+ }
+
}
}
if (i < 0)
goto out;
- for (i = 0; i <= end_zone; i++) {
- struct zone *zone = pgdat->node_zones + i;
-
- if (!populated_zone(zone))
- continue;
-
- /*
- * If any zone is currently balanced then kswapd will
- * not call compaction as it is expected that the
- * necessary pages are already available.
- */
- if (pgdat_needs_compaction &&
- zone_watermark_ok(zone, order,
- low_wmark_pages(zone),
- *classzone_idx, 0))
- pgdat_needs_compaction = false;
- }
-
/*
* If we're getting trouble reclaiming, start doing writepage
* even in laptop mode.
--
2.3.5
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