Commits
Mike Snitzer committed 1ae49ea2cf3
dm: split request structure out from dm_rq_target_io structure Request-based DM support for blk-mq devices requires that dm_rq_target_io structures not be allocated with an embedded request structure. The request-based DM target (e.g. dm-multipath) must allocate the request from the blk-mq devices' request_queue using blk_get_request(). The unfortunate side-effect of this change is old-style request-based DM support will no longer use contiguous memory for the dm_rq_target_io and request structures for each clone. Signed-off-by: Mike Snitzer <snitzer@redhat.com>