X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=mm%2Fvmscan.c;h=d036e59d302b092bc4186dbb753066416e35c9f6;hb=ef88c53f60e30247566e7c3a11c32a1db0697fa7;hp=5ed24b94c5e69a0dbe6c361ccb0665e3fcc591af;hpb=c891f2cd89c7a2b4d51d009e94c74a1e31626528;p=firefly-linux-kernel-4.4.55.git

diff --git a/mm/vmscan.c b/mm/vmscan.c
index 5ed24b94c5e6..d036e59d302b 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -2310,7 +2310,8 @@ static bool pgdat_balanced(pg_data_t *pgdat, unsigned long balanced_pages,
 	for (i = 0; i <= classzone_idx; i++)
 		present_pages += pgdat->node_zones[i].present_pages;
 
-	return balanced_pages > (present_pages >> 2);
+	/* A special case here: if zone has no page, we think it's balanced */
+	return balanced_pages >= (present_pages >> 2);
 }
 
 /* is kswapd sleeping prematurely? */