From: Andrew Morton <[email-masked]>

mm/memcontrol.c: In function 'mem_cgroup_charge':
mm/memcontrol.c:337: error: implicit declaration of function 'congestion_wait'

Cc: "Eric W. Biederman" <[email-masked]>
Cc: Balbir Singh <[email-masked]>
Cc: David Rientjes <[email-masked]>
Cc: Herbert Poetzl <[email-masked]>
Cc: Kirill Korotaev <[email-masked]>
Cc: Nick Piggin <[email-masked]>
Cc: Paul Menage <[email-masked]>
Cc: Pavel Emelianov <[email-masked]>
Cc: Peter Zijlstra <[email-masked]>
Cc: Vaidyanathan Srinivasan <[email-masked]>
Signed-off-by: Andrew Morton <[email-masked]>
---

 mm/memcontrol.c |    1 +
 1 file changed, 1 insertion(+)

diff -puN mm/memcontrol.c~memory-controller-add-per-cgroup-lru-and-reclaim-v7-fix mm/memcontrol.c
--- a/mm/memcontrol.c~memory-controller-add-per-cgroup-lru-and-reclaim-v7-fix
+++ a/mm/memcontrol.c
@@ -22,6 +22,7 @@
 #include <linux/cgroup.h>
 #include <linux/mm.h>
 #include <linux/page-flags.h>
+#include <linux/backing-dev.h>
 #include <linux/bit_spinlock.h>
 #include <linux/rcupdate.h>
 #include <linux/swap.h>
_

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