On Fri, 21 Jan 2022 04:38:56 -0800, Dylan Yudaken wrote:
> In some cases io_rsrc_ref_quiesce will call io_rsrc_node_switch_start,
> and then immediately flush the delayed work queue &ctx->rsrc_put_work.
>
> However the percpu_ref_put does not immediately destroy the node, it
> will be called asynchronously via RCU. That ends up with
> io_rsrc_node_ref_zero only being called after rsrc_put_work has been
> flushed, and so the process ends up sleeping for 1 second unnecessarily.
>
> [...]
Applied, thanks!
[1/1] io_uring: fix bug in slow unregistering of nodes
(no commit info)
Best regards,
--
Jens Axboe
