From: Joe Thornber <ejt@redhat.com>
Date: Thu, 5 Dec 2013 00:51:33 +0000 (-0500)
Subject: dm thin: handle metadata failures more consistently
X-Git-Tag: v3.14-rc1~130^2~24
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b53306558526a097a587774573b76d0d9903c5bf;p=pandora-kernel.git

dm thin: handle metadata failures more consistently

Introduce metadata_operation_failed() wrappers, around set_pool_mode(),
to assist with improving the consistency of how metadata failures are
handled.  Logging is improved and metadata operation failures trigger
read-only mode immediately.

Also, eliminate redundant set_pool_mode() calls in the two
alloc_data_block() caller's error paths.

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