From: Mike Snitzer <snitzer@redhat.com>
Date: Tue, 9 Jun 2015 16:31:26 +0000 (-0400)
Subject: dm thin: fail messages with EOPNOTSUPP when pool cannot handle messages
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~116^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=fd467696e8beb542144cd005ff96cd35fff41354;p=pandora-kernel.git

dm thin: fail messages with EOPNOTSUPP when pool cannot handle messages

Use EOPNOTSUPP, rather than EINVAL, error code when user attempts to
send the pool a message.  Otherwise usespace is led to believe the
message failed due to invalid argument.

Reported-by: Zdenek Kabelac <zkabelac@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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