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-rw-r--r--mm/vmscan.c10
1 files changed, 9 insertions, 1 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index dafb9d91b604..388a0447b8e8 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2244,8 +2244,16 @@ static bool sleeping_prematurely(pg_data_t *pgdat, int order, long remaining)
if (!populated_zone(zone))
continue;
- if (zone->all_unreclaimable)
+ /*
+ * balance_pgdat() skips over all_unreclaimable after
+ * DEF_PRIORITY. Effectively, it considers them balanced so
+ * they must be considered balanced here as well if kswapd
+ * is to sleep
+ */
+ if (zone->all_unreclaimable) {
+ balanced += zone->present_pages;
continue;
+ }
if (!zone_watermark_ok_safe(zone, order, high_wmark_pages(zone),
0, 0))