From: Mike Snitzer <snitzer@redhat.com>
Date: Mon, 14 Jul 2014 20:59:39 +0000 (-0400)
Subject: dm cache metadata: do not allow the data block size to change
X-Git-Tag: cleanup-for-v3.18~236^2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=048e5a07f282c57815b3901d4a68a77fa131ce0a;p=pandora-kernel.git

dm cache metadata: do not allow the data block size to change

The block size for the dm-cache's data device must remained fixed for
the life of the cache.  Disallow any attempt to change the cache's data
block size.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Cc: stable@vger.kernel.org
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