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-rw-r--r--block/blk-cgroup.c6
1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c
index 53976f2704a5..4e714f8ddcd2 100644
--- a/block/blk-cgroup.c
+++ b/block/blk-cgroup.c
@@ -1538,6 +1538,9 @@ void blkio_policy_register(struct blkio_policy_type *blkiop)
list_for_each_entry(q, &all_q_list, all_q_node)
update_root_blkg_pd(q, blkiop->plid);
blkcg_bypass_end();
+
+ if (blkiop->cftypes)
+ WARN_ON(cgroup_add_cftypes(&blkio_subsys, blkiop->cftypes));
}
EXPORT_SYMBOL_GPL(blkio_policy_register);
@@ -1545,6 +1548,9 @@ void blkio_policy_unregister(struct blkio_policy_type *blkiop)
{
struct request_queue *q;
+ if (blkiop->cftypes)
+ cgroup_rm_cftypes(&blkio_subsys, blkiop->cftypes);
+
blkcg_bypass_start();
spin_lock(&blkio_list_lock);