Re: [dm-devel] [PATCH 2/2] block: Avoid deadlocks with bio allocation by stacking drivers

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On Mon, Sep 10, 2012 at 03:09:10PM -0700, Tejun Heo wrote:
> On Mon, Sep 10, 2012 at 02:56:33PM -0700, Kent Overstreet wrote:
> > commit df7e63cbffa3065fcc4ba2b9a93418d7c7312243
> > Author: Kent Overstreet <koverstreet@xxxxxxxxxx>
> > Date:   Mon Sep 10 14:33:46 2012 -0700
> > 
> >     block: Avoid deadlocks with bio allocation by stacking drivers

> >     Note that this doesn't do anything for allocation from other mempools.

Note that dm has several cases of this, so this patch should not be used with
dm yet.  Mikulas is studying those cases to see whether anything like this
might be feasible/sensible or not.

> I'm still a bit scared but think this is correct.
>  Acked-by: Tejun Heo <tj@xxxxxxxxxx>
 
Alasdair

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