diff options
| -rw-r--r-- | block/blk-mq-debugfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/block/blk-mq-debugfs.c b/block/blk-mq-debugfs.c index 22c182b40bc3..5c7cadf51a88 100644 --- a/block/blk-mq-debugfs.c +++ b/block/blk-mq-debugfs.c @@ -679,8 +679,10 @@ void blk_mq_debugfs_register_hctxs(struct request_queue *q) struct blk_mq_hw_ctx *hctx; unsigned long i; + mutex_lock(&q->debugfs_mutex); queue_for_each_hw_ctx(q, hctx, i) blk_mq_debugfs_register_hctx(q, hctx); + mutex_unlock(&q->debugfs_mutex); } void blk_mq_debugfs_unregister_hctxs(struct request_queue *q) |