blkcg: implement blkio_policy_type->cftypes

Add blkiop->cftypes which is added and removed together with the
policy.  This will be used to move conf/stat handling to the policies.

Signed-off-by: Tejun Heo <tj@kernel.org>

1 files changed, 1 insertions, 0 deletions

diff --git a/block/blk-cgroup.h b/block/blk-cgroup.h
index 361ecfa4d28..fa744d57beb 100644
--- a/block/blk-cgroup.h
+++ b/block/blk-cgroup.h
@@ -181,6 +181,7 @@ struct blkio_policy_type {
 	struct blkio_policy_ops ops;
 	enum blkio_policy_id plid;
 	size_t pdata_size;		/* policy specific private data size */
+	struct cftype *cftypes;		/* cgroup files for the policy */
 };
 
 extern int blkcg_init_queue(struct request_queue *q);