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-rw-r--r--include/linux/blk-cgroup.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 3033eb173eb4..07a32b813ed8 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -99,6 +99,12 @@ struct blkcg_gq {
struct hlist_node blkcg_node;
struct blkcg *blkcg;
+ /*
+ * Each blkg gets congested separately and the congestion state is
+ * propagated to the matching bdi_writeback_congested.
+ */
+ struct bdi_writeback_congested *wb_congested;
+
/* all non-root blkcg_gq's are guaranteed to have access to parent */
struct blkcg_gq *parent;