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-rw-r--r--include/linux/blk-cgroup.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/blk-cgroup.h b/include/linux/blk-cgroup.h
index 7104bea8dab1..9d92153dd856 100644
--- a/include/linux/blk-cgroup.h
+++ b/include/linux/blk-cgroup.h
@@ -691,6 +691,9 @@ static inline bool blkcg_bio_issue_check(struct request_queue *q,
rcu_read_lock();
blkcg = bio_blkcg(bio);
+ /* associate blkcg if bio hasn't attached one */
+ bio_associate_blkcg(bio, &blkcg->css);
+
blkg = blkg_lookup(blkcg, q);
if (unlikely(!blkg)) {
spin_lock_irq(q->queue_lock);