On Sat, 14 Feb 2026 13:43:50 +0800, Yu Kuai wrote:
> Creating debugfs entries can trigger fs reclaim, which can enter back
> into the block layer request_queue. This can cause deadlock if the
> queue is frozen.
>
> Previously, a WARN_ON_ONCE check was used in debugfs_create_files()
> to detect this condition, but it was racy since the queue can be frozen
> from another context at any time.
>
> [...]
Applied, thanks!
[1/1] blk-mq: use NOIO context to prevent deadlock during debugfs creation
(no commit info)
Best regards,
--
Jens Axboe
