From: NeilBrown <neilb@suse.de>
Date: Tue, 31 Mar 2009 03:56:41 +0000 (+1100)
Subject: md/raid5: allow layout/chunksize to be changed on an active 2-drive raid5.
X-Git-Tag: v2.6.30-rc1~241^2~24
X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b3546035277847028df650b147469fc943cf5c71;p=pandora-kernel.git

md/raid5: allow layout/chunksize to be changed on an active 2-drive raid5.

2-drive raid5's aren't very interesting.  But if you are converting
a raid1 into a raid5, you will at least temporarily have one.  And
that it a good time to set the layout/chunksize for the new RAID5
if you aren't happy with the defaults.

layout and chunksize don't actually affect the placement of data
on a 2-drive raid5, so we just do some internal book-keeping.

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