From e7a3e871d8954c636b6cd2db7c7ece7ffe405986 Mon Sep 17 00:00:00 2001
From: Joe Thornber <ejt@redhat.com>
Date: Tue, 13 May 2014 16:14:14 -0400
Subject: [PATCH] dm thin: cleanup noflush_work to use a proper completion

Factor out a pool_work interface that noflush_work makes use of to wait
for and complete work items (in terms of a proper completion struct).
Allows discontinuing the use of a custom completion in terms of atomic_t
and wait_event.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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