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-rw-r--r--block/blk-throttle.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/block/blk-throttle.c b/block/blk-throttle.c
index 52a429397d3b..fe6a442b8482 100644
--- a/block/blk-throttle.c
+++ b/block/blk-throttle.c
@@ -169,6 +169,9 @@ static void throtl_put_tg(struct throtl_grp *tg)
if (!atomic_dec_and_test(&tg->ref))
return;
+ /* release the extra blkcg reference this blkg has been holding */
+ css_put(&tg->blkg.blkcg->css);
+
/*
* A group is freed in rcu manner. But having an rcu lock does not
* mean that one can access all the fields of blkg and assume these