From: NeilBrown <neilb@suse.de>
Date: Mon, 3 Aug 2009 00:59:57 +0000 (+1000)
Subject: md: Handle growth of v1.x metadata correctly.
X-Git-Tag: v2.6.31-rc6~83^2~3
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=70471dafe3390243c598a3165dfb86b8b8b3f4fe;p=pandora-kernel.git

md: Handle growth of v1.x metadata correctly.

The v1.x metadata does not have a fixed size and can grow
when devices are added.
If it grows enough to require an extra sector of storage,
we need to update the 'sb_size' to match.

Without this, md can write out an incomplete superblock with a
bad checksum, which will be rejected when trying to re-assemble
the array.

Cc: stable@kernel.org
Signed-off-by: NeilBrown <neilb@suse.de>
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