From: Marco Sanvido <marco@purestorage.com>
Date: Fri, 20 Jan 2012 23:49:27 +0000 (-0800)
Subject: target: Fix iblock se_dev_attrib.unmap_granularity
X-Git-Tag: v3.3-rc3~2^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7347b5ff7090b2b399b7921a266255cd55bbd78f;p=pandora-kernel.git

target: Fix iblock se_dev_attrib.unmap_granularity

The block layer keeps q->limits.discard_granularity in bytes, but iblock
(and the SCSI Block Limits VPD page) keep unmap_granularity in blocks.
Report the correct value when exporting block devices by dividing to
convert bytes to blocks.

Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
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