Re: [PATCH] dm io: Drop the obsolete and incorrect doc for dm_io()

[Christoph Hellwig]

On Mon, Feb 07, 2022 at 05:06:20PM +0800, Barry Song wrote:
> Commit 7eaceaccab5f ("block: remove per-queue plugging") dropped
> unplug_delay() and blk_unplug(). And the current code has no
> fundamental difference between sync_io() and async_io() except
> sync_io() uses sync_io_complete() as the notify.fn and explicitly
> calls wait_for_completion_io() to sync. The comment isn't valid
> any more.

Looks good:

Reviewed-by: Christoph Hellwig <hch@xxxxxx>