blkcg: Annotate blkg_hint correctly

Avoid that sparse complains about blkg_hint manipulations.

Fixes: a637120e4902 ("blkcg: use radix tree to index blkgs from blkcg")
Signed-off-by: Bart Van Assche <bart.vanassche@sandisk.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Jens Axboe <axboe@fb.com>

diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 10648e3..cbdbf34 100644 (file)
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -45,7 +45,7 @@ struct blkcg {
        spinlock_t                      lock;
 
        struct radix_tree_root          blkg_tree;
-       struct blkcg_gq                 *blkg_hint;
+       struct blkcg_gq __rcu           *blkg_hint;
        struct hlist_head               blkg_list;
 
        struct blkcg_policy_data        *cpd[BLKCG_MAX_POLS];