From: Mikulas Patocka <mpatocka@redhat.com>
Date: Tue, 4 Mar 2014 23:24:49 +0000 (-0500)
Subject: dm: stop using bi_private
X-Git-Tag: v3.15-rc1~69^2~15
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bfc6d41cee53b2d02edc469fa459000a448a90ab;p=pandora-kernel.git

dm: stop using bi_private

Device mapper uses the bio structure's bi_private field as a pointer
to dm_target_io or dm_rq_clone_bio_info.  But a bio structure is
embedded in the dm_target_io and dm_rq_clone_bio_info structures, so the
pointer to the structure that contains the bio can be found with the
container_of() macro.

Remove the use of bi_private and use container_of() instead.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
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