From mboxrd@z Thu Jan  1 00:00:00 1970
From: Christoph Hellwig <hch@infradead.org>
Date: Fri, 10 Sep 2021 08:36:52 +0100
Subject: [Cluster-devel] [PATCH v7 16/19] iomap: Add done_before
	argument to iomap_dio_rw
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On Thu, Sep 09, 2021 at 10:22:56AM -0700, Linus Torvalds wrote:
> I think you misunderstand.
> 
> Or maybe I do.
> 
> It very much doesn't force sync in this case. It did the *first* part
> of it synchronously, but then it wants to continue with that async
> part for the rest, and very much do that async completion.
> 
> And that's why it wants to add that "I already did X much of the
> work", exactly so that the async completion can report the full end
> result.

Could be, and yes in that case it won't work.