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-rw-r--r--mm/vmscan.c10
1 files changed, 8 insertions, 2 deletions
diff --git a/mm/vmscan.c b/mm/vmscan.c
index 4898daf074cf..bf4778479e3a 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -761,9 +761,15 @@ static unsigned long shrink_page_list(struct list_head *page_list,
if (dirty && !writeback)
nr_unqueued_dirty++;
- /* Treat this page as congested if underlying BDI is */
+ /*
+ * Treat this page as congested if the underlying BDI is or if
+ * pages are cycling through the LRU so quickly that the
+ * pages marked for immediate reclaim are making it to the
+ * end of the LRU a second time.
+ */
mapping = page_mapping(page);
- if (mapping && bdi_write_congested(mapping->backing_dev_info))
+ if ((mapping && bdi_write_congested(mapping->backing_dev_info)) ||
+ (writeback && PageReclaim(page)))
nr_congested++;
/*