tree c1ea27daf3c5b2b0ff37f2ee2037bd74458f1d23
parent 66cb1910df17b38334153462ec8166e48058035f
author Joe Thornber <ejt@redhat.com> 1383154170 +0000
committer Mike Snitzer <snitzer@redhat.com> 1384039199 -0500

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>