From: Joe Thornber <ejt@redhat.com>
Date: Fri, 27 Jul 2012 14:08:08 +0000 (+0100)
Subject: dm persistent data: create new dm_block_manager struct
X-Git-Tag: v3.6-rc1~56^2~28
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=51a0f659c03ccc8ec407c7a9f9701d1b4618d515;p=pandora-kernel.git

dm persistent data: create new dm_block_manager struct

This patch introduces a separate struct for the block_manager.
It also uses IS_ERR to check the return value of dm_bufio_client_create
instead of testing incorrectly for NULL.

Prior to this patch a struct dm_block_manager was really an alias for
a struct dm_bufio_client.  We want to add some functionality to the
block manager that will require extra fields, so this one to one
mapping is no longer valid.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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