linux-kernel - Re: [PATCH] dm io: Drop the obsolete and incorrect doc for dm

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Date:   Wed, 9 Feb 2022 07:11:39 -0800
From:   Christoph Hellwig <hch@...radead.org>
To:     Barry Song <21cnbao@...il.com>
Cc:     agk@...hat.com, snitzer@...hat.com, dm-devel@...hat.com,
        linux-block@...r.kernel.org, linux-kernel@...r.kernel.org,
        linuxarm@...wei.com, Barry Song <song.bao.hua@...ilicon.com>,
        Jens Axboe <axboe@...nel.dk>
Subject: Re: [PATCH] dm io: Drop the obsolete and incorrect doc for dm_io()

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@....de>