blk-mq: idle all hardware contexts before freeing a queue

Without this we can leak the active_queues reference if a command is
freed while it is considered active.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Christoph Hellwig 2014-05-26 11:45:02 +02:00 committed by Jens Axboe
parent c22d9d8a60
commit 19c5d84f14

View File

@ -1844,6 +1844,7 @@ void blk_mq_free_queue(struct request_queue *q)
blk_mq_del_queue_tag_set(q);
queue_for_each_hw_ctx(q, hctx, i) {
blk_mq_tag_idle(hctx);
kfree(hctx->ctxs);
blk_mq_unregister_cpu_notifier(&hctx->cpu_notifier);
if (q->mq_ops->exit_hctx)