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authorJoe Thornber <ejt@redhat.com>2014-11-27 12:21:08 +0000
committerMike Snitzer <snitzer@redhat.com>2014-12-01 11:30:12 -0500
commitf29a3147e251d7ae20d3194ff67f109d71e501b4 (patch)
tree21867997b4b5be3b677e0265adbfd33d3a6ef4ad /drivers/ide
parent2bb812df63bbd246bd39d10f2e810b2a0a59e99e (diff)
downloadlinux-next-f29a3147e251d7ae20d3194ff67f109d71e501b4.tar.gz
dm cache: only use overwrite optimisation for promotion when in writeback mode
Overwrite causes the cache block and origin blocks to diverge, which is only allowed in writeback mode. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Cc: stable@vger.kernel.org
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