From: Joe Thornber <ejt@redhat.com>
Date: Wed, 30 Oct 2013 17:29:30 +0000 (+0000)
Subject: dm cache: improve efficiency of quiescing flag management
X-Git-Tag: v3.13-rc1~97^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=238f8363b6661fd9dd9aae854917ab9c661f3652;p=pandora-kernel.git

dm cache: improve efficiency of quiescing flag management

Make the quiescing flag an atomic_t and stop protecting it with a spin
lock.

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