From 643ac9fc5429e85b8b7f534544b80bcc4f34c367 Mon Sep 17 00:00:00 2001 From: Hugh Dickins Date: Fri, 23 Mar 2012 02:57:31 -0700 Subject: [PATCH] mm: fix testorder interaction between two kswapd patches Adjusting cc715d99e529 "mm: vmscan: forcibly scan highmem if there are too many buffer_heads pinning highmem" for -stable reveals that it was slightly wrong once on top of fe2c2a106663 "vmscan: reclaim at order 0 when compaction is enabled", which specifically adds testorder for the zone_watermark_ok_safe() test. Signed-off-by: Hugh Dickins Acked-by: Mel Gorman Acked-by: Rik van Riel Cc: Andrew Morton Signed-off-by: Linus Torvalds --- mm/vmscan.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/vmscan.c b/mm/vmscan.c index 49f15ef0a99a..7658fd6536dd 100644 --- a/mm/vmscan.c +++ b/mm/vmscan.c @@ -2817,7 +2817,7 @@ static unsigned long balance_pgdat(pg_data_t *pgdat, int order, testorder = 0; if ((buffer_heads_over_limit && is_highmem_idx(i)) || - !zone_watermark_ok_safe(zone, order, + !zone_watermark_ok_safe(zone, testorder, high_wmark_pages(zone) + balance_gap, end_zone, 0)) { shrink_zone(priority, zone, &sc); -- GitLab