From mboxrd@z Thu Jan  1 00:00:00 1970
From: Joe Thornber <thornber@redhat.com>
Subject: Re: I/O block when removing thin device on the same pool
Date: Tue, 26 Jan 2016 16:19:19 +0000
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Hi Dennis,

This is indeed useful.  Is there any chance you could re-run your test
with this patch applied please?

https://github.com/jthornber/linux-2.6/commit/64197a3802320c7a7359ff4a3e592e2bc5bb73dc

- Joe