Re: [dm-devel] [PATCH] block: flush queued bios when the process blocks

[Kent Overstreet]

On Tue, May 27, 2014 at 11:14:15AM -0700, Christoph Hellwig wrote:
> On Tue, May 27, 2014 at 11:42:26AM -0600, Jens Axboe wrote:
> > Except such a thing already exists, there are unplug callback
> > chains. All I'm asking is that you look into how feasible it would
> > be to use something like that, instead of reinventing the wheel.
> 
> I suspect the code from MD could be lifted quite easily.
> 
> It would be nicer to move it up to the block layer entirely, but when I
> tried that a while ago I ran into issues that I unfortunately don't
> remember.

How's md do it?
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