From: Heinz Mauelshagen <hjm@redhat.com>
Date: Tue, 21 Oct 2008 16:45:06 +0000 (+0100)
Subject: dm raid1: separate region_hash interface part1
X-Git-Tag: v2.6.28-rc1~41^2~2
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1f965b19437017cea6d3f3f46acdc5acae5fd011;p=pandora-kernel.git

dm raid1: separate region_hash interface part1

Separate the region hash code from raid1 so it can be shared by forthcoming
targets.  Use BUG_ON() for failed async dm_io() calls.

Signed-off-by: Heinz Mauelshagen <hjm@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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