diff options
| -rw-r--r-- | block/cfq-iosched.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/block/cfq-iosched.c b/block/cfq-iosched.c index 1f96ad6254f..65083453760 100644 --- a/block/cfq-iosched.c +++ b/block/cfq-iosched.c @@ -1209,6 +1209,9 @@ static void cfq_destroy_cfqg(struct cfq_data *cfqd, struct cfq_group *cfqg) hlist_del_init(&cfqg->cfqd_node); + BUG_ON(cfqd->nr_blkcg_linked_grps <= 0); + cfqd->nr_blkcg_linked_grps--; + /* * Put the reference taken at the time of creation so that when all * queues are gone, group can be destroyed. |