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 361ecfa4d28d..fa744d57bebb 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);