Re: [PATCH] blk-mq: run hw queue asynchronously in blk_mq_start_hw_queues

[Ming Lei]

On Tue, Jun 24, 2014 at 10:53 PM, Ming Lei <tom.leiming@xxxxxxxxx> wrote:
> From API view, it isn't good to run all hw queues synchronously
> in one context, since it isn't correct for multi hw queue case.
>
> So this patch adds 'async' parameter to blk_mq_start_hw_queue(),
> and make blk_mq_start_hw_queues() to run hw queues asynchronously
> at default.

BTW, without the change, it is easy to trigger the WARN_ON() in
__blk_mq_run_hw_queue().

Thanks,
-- 
Ming Lei
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/