---

yaml
---
r: 2443
b: refs/heads/master
c: bfbb38f
h: refs/heads/master
i:
  2441: 8fc9c02
  2439: 569a21c
v: v3

[refs]

@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 295ab93497ec703f7d6eaf0787dd9768b83035fe
+refs/heads/master: bfbb38fb808ac23ef44472d05d9bb36edfb49ed0

trunk/mm/vmscan.c

@@ -74,6 +74,9 @@ 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
@@ -414,7 +417,7 @@ static int shrink_list(struct list_head *page_list, struct scan_control *sc)
 		 * Anonymous process memory has backing store?
 		 * Try to allocate it some swap space here.
 		 */
-		if (PageAnon(page) && !PageSwapCache(page)) {
+		if (PageAnon(page) && !PageSwapCache(page) && sc->may_swap) {
 			if (!add_to_swap(page))
 				goto activate_locked;
 		}
@@ -927,6 +930,7 @@ int try_to_free_pages(struct zone **zones,
 
 	sc.gfp_mask = gfp_mask;
 	sc.may_writepage = 0;
+	sc.may_swap = 1;
 
 	inc_page_state(allocstall);
 
@@ -1027,6 +1031,7 @@ 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);