block: don't remove hctx debugfs dir from blk_mq_exit_queue

The queue's top debugfs dir is removed from blk_release_queue(), so all
hctx's debugfs dirs are removed from there. Given blk_mq_exit_queue()
is only called from blk_cleanup_queue(), it isn't necessary to remove
hctx debugfs from blk_mq_exit_queue().

So remove it from blk_mq_exit_queue().

Signed-off-by: Ming Lei <ming.lei@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/block/blk-mq.c b/block/blk-mq.c
index 62526bcea1e16611bf3b400b7b7edd411be5fa62..4b0224ac7ff42446b7da156bdee1425d92b64e9c 100644 (file)
--- a/block/blk-mq.c
+++ b/block/blk-mq.c
@@ -3429,7 +3429,6 @@ static void blk_mq_exit_hw_queues(struct request_queue *q,
        queue_for_each_hw_ctx(q, hctx, i) {
                if (i == nr_queue)
                        break;
-               blk_mq_debugfs_unregister_hctx(hctx);
                blk_mq_exit_hctx(q, set, hctx, i);
        }
 }