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Commit 131cd131 authored by Mike Snitzer's avatar Mike Snitzer
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dm cache: fix writethrough mode quiescing in cache_map


Commit 2ee57d58 ("dm cache: add passthrough mode") inadvertently
removed the deferred set reference that was taken in cache_map()'s
writethrough mode support.  Restore taking this reference.

This issue was found with code inspection.

Signed-off-by: default avatarMike Snitzer <snitzer@redhat.com>
Acked-by: default avatarJoe Thornber <ejt@redhat.com>
Cc: stable@vger.kernel.org # 3.13+
parent fbcde3d8
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