dm: stop using bi_private
authorMikulas Patocka <mpatocka@redhat.com>
Tue, 4 Mar 2014 23:24:49 +0000 (18:24 -0500)
committerMike Snitzer <snitzer@redhat.com>
Thu, 27 Mar 2014 20:56:24 +0000 (16:56 -0400)
commitbfc6d41cee53b2d02edc469fa459000a448a90ab
tree240bde16ddcfcf33fc3cda54a9228641e1fe42b0
parentd70ab4fb723cf7acfa656cb2ad1e75be7ed94bef
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>
drivers/md/dm.c