X-Git-Url: https://bbs.cooldavid.org/git/?a=blobdiff_plain;f=mm%2Fvmscan.c;h=d31d7ce52c0ea2dbbf85b26019c9fdd70fab624a;hb=HEAD;hp=b8a6fdc2131258db15321021375117cae27cec0d;hpb=426e1f5cec4821945642230218876b0e89aafab1;p=net-next-2.6.git

diff --git a/mm/vmscan.c b/mm/vmscan.c
index b8a6fdc2131..d31d7ce52c0 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -913,7 +913,7 @@ keep_lumpy:
 	 * back off and wait for congestion to clear because further reclaim
 	 * will encounter the same problem
 	 */
-	if (nr_dirty == nr_congested)
+	if (nr_dirty == nr_congested && nr_dirty != 0)
 		zone_set_flag(zone, ZONE_CONGESTED);
 
 	free_page_list(&free_pages);