diff --git a/mm/vmscan.c b/mm/vmscan.c
index 2385663ae5e5..2cff0d491c6d 100644
--- a/mm/vmscan.c
+++ b/mm/vmscan.c
@@ -1443,25 +1443,11 @@ shrink_inactive_list(unsigned long nr_to_scan, struct lruvec *lruvec,
 	 * as there is no guarantee the dirtying process is throttled in the
 	 * same way balance_dirty_pages() manages.
 	 *
-	 * This scales the number of dirty pages that must be under writeback
-	 * before a zone gets flagged ZONE_WRITEBACK. It is a simple backoff
-	 * function that has the most effect in the range DEF_PRIORITY to
-	 * DEF_PRIORITY-2 which is the priority reclaim is considered to be
-	 * in trouble and reclaim is considered to be in trouble.
-	 *
-	 * DEF_PRIORITY   100% isolated pages must be PageWriteback to throttle
-	 * DEF_PRIORITY-1  50% must be PageWriteback
-	 * DEF_PRIORITY-2  25% must be PageWriteback, kswapd in trouble
-	 * ...
-	 * DEF_PRIORITY-6 For SWAP_CLUSTER_MAX isolated pages, throttle if any
-	 *                     isolated page is PageWriteback
-	 *
 	 * Once a zone is flagged ZONE_WRITEBACK, kswapd will count the number
 	 * of pages under pages flagged for immediate reclaim and stall if any
 	 * are encountered in the nr_immediate check below.
 	 */
-	if (nr_writeback && nr_writeback >=
-			(nr_taken >> (DEF_PRIORITY - sc->priority)))
+	if (nr_writeback && nr_writeback == nr_taken)
 		zone_set_flag(zone, ZONE_WRITEBACK);
 
 	/*