From: NeilBrown <neilb@suse.de>
Date: Sun, 20 May 2012 23:27:01 +0000 (+1000)
Subject: md/raid5: allow for change in data_offset while managing a reshape.
X-Git-Tag: v3.5-rc1~110^2~51
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b5254dd5fdd9abcacadb5101beb35df9ae8cc564;p=pandora-kernel.git

md/raid5: allow for change in data_offset while managing a reshape.

The important issue here is incorporating the different in data_offset
into calculations concerning when we might need to over-write data
that is still thought to be valid.

To this end we find the minimum offset difference across all devices
and add that where appropriate.

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