---

yaml
---
r: 18907
b: refs/heads/master
c: f1fd106
h: refs/heads/master
i:
  18905: ad69350
  18903: 113640f
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: fc3012896337c83a056c496d7cfb0072e1591181
+refs/heads/master: f1fd1067ece574ab56e4a70878b9a5a1ed4c3c42

trunk/mm/vmscan.c

@@ -71,6 +71,9 @@ struct scan_control {
 
 	int may_writepage;
 
+	/* Can pages be swapped as part of reclaim? */
+	int may_swap;
+
 	/* This context's SWAP_CLUSTER_MAX. If freeing memory for
 	 * suspend, we effectively ignore SWAP_CLUSTER_MAX.
 	 * In this context, it doesn't matter that we scan the
@@ -458,6 +461,8 @@ static int shrink_list(struct list_head *page_list, struct scan_control *sc)
 		 * Try to allocate it some swap space here.
 		 */
 		if (PageAnon(page) && !PageSwapCache(page)) {
+			if (!sc->may_swap)
+				goto keep_locked;
 			if (!add_to_swap(page, GFP_ATOMIC))
 				goto activate_locked;
 		}
@@ -1166,6 +1171,7 @@ int try_to_free_pages(struct zone **zones, gfp_t gfp_mask)
 
 	sc.gfp_mask = gfp_mask;
 	sc.may_writepage = 0;
+	sc.may_swap = 1;
 
 	inc_page_state(allocstall);
 
@@ -1268,6 +1274,7 @@ static int balance_pgdat(pg_data_t *pgdat, int nr_pages, int order)
 	total_reclaimed = 0;
 	sc.gfp_mask = GFP_KERNEL;
 	sc.may_writepage = 0;
+	sc.may_swap = 1;
 	sc.nr_mapped = read_page_state(nr_mapped);
 
 	inc_page_state(pageoutrun);