diff options
| -rw-r--r-- | block/blk-core.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/block/blk-core.c b/block/blk-core.c index f6587111640..f43c8a5840a 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -407,8 +407,13 @@ void blk_cleanup_queue(struct request_queue *q) spin_unlock_irq(lock); mutex_unlock(&q->sysfs_lock); - /* drain all requests queued before DEAD marking */ - blk_drain_queue(q, true); + /* + * Drain all requests queued before DEAD marking. The caller might + * be trying to tear down @q before its elevator is initialized, in + * which case we don't want to call into draining. + */ + if (q->elevator) + blk_drain_queue(q, true); /* @q won't process any more request, flush async actions */ del_timer_sync(&q->backing_dev_info.laptop_mode_wb_timer); |