diff options
Diffstat (limited to 'block/blk-cgroup.c')
| -rw-r--r-- | block/blk-cgroup.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/block/blk-cgroup.c b/block/blk-cgroup.c index 6bd0619a7d6e..c30661ddc873 100644 --- a/block/blk-cgroup.c +++ b/block/blk-cgroup.c @@ -202,6 +202,12 @@ static struct blkcg_gq *blkg_create(struct blkcg *blkcg, WARN_ON_ONCE(!rcu_read_lock_held()); lockdep_assert_held(&q->queue_lock); + /* request_queue is dying, do not create/recreate a blkg */ + if (blk_queue_dying(q)) { + ret = -ENODEV; + goto err_free_blkg; + } + /* blkg holds a reference to blkcg */ if (!css_tryget_online(&blkcg->css)) { ret = -ENODEV; |