From: Mike Snitzer <snitzer@redhat.com>
Date: Mon, 3 Aug 2015 13:54:58 +0000 (-0400)
Subject: dm: fix dm_merge_bvec regression on 32 bit systems
X-Git-Tag: omap-for-v4.3/fixes-merge-window~125^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bd4aaf8f9b85d6b2df3231fd62b219ebb75d3568;p=pandora-kernel.git

dm: fix dm_merge_bvec regression on 32 bit systems

A DM regression on 32 bit systems was reported against v4.2-rc3 here:
https://lkml.org/lkml/2015/7/29/401

Fix this by reverting both commit 1c220c69 ("dm: fix casting bug in
dm_merge_bvec()") and 148e51ba ("dm: improve documentation and code
clarity in dm_merge_bvec").  This combined revert is done to eliminate
the possibility of a partial revert in stable@ kernels.

In hindsight the correct fix, at the time 1c220c69 was applied to fix
the regression that 148e51ba introduced, should've been to simply revert
148e51ba.

Reported-by: Josh Boyer <jwboyer@fedoraproject.org>
Tested-by: Adam Williamson <awilliam@redhat.com>
Acked-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org # 3.19+
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