From: Neil Brown <neilb@notabene.brown>
Date: Fri, 27 Jun 2008 22:31:29 +0000 (+1000)
Subject: Enable setting of 'offset' and 'size' of a hot-added spare.
X-Git-Tag: v2.6.27-rc1~957^2~48
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8ed0a5216a0238f53b482ec88ce4aeed4b9f0da1;p=pandora-kernel.git

Enable setting of 'offset' and 'size' of a hot-added spare.

offset_store and rdev_size_store allow control of the region of a
device which is to be using in an md/raid array.
They only allow these values to be set when an array is being assembled,
as changing them on an active array could be dangerous.
However when adding a spare device to an array, we might need to
set the offset and size before starting recovery.  So allow
these values to be set also if "->raid_disk < 0" which indicates that
the device is still a spare.

Signed-off-by: Neil Brown <neilb@suse.de>
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