commit d45b3279a5a2252cafcd665bbf2db8c9b31ef783
author Christoph Hellwig <hch@lst.de> Tue Jul 08 12:25:28 2014 +0200
committer Jens Axboe <axboe@fb.com> Tue Jul 08 12:25:28 2014 +0200
tree 45aa82b20beba9c325ca64f31ab798d27cfdc702
parent 448bfad8a185876ce8de484a921d49769972cad7

block: don't assume last put of shared tags is for the host

There is no inherent reason why the last put of a tag structure must be
the one for the Scsi_Host, as device model objects can be held for
arbitrary periods.  Merge blk_free_tags and __blk_free_tags into a single
funtion that just release a references and get rid of the BUG() when the
host reference wasn't the last.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Cc: stable@kernel.org
Signed-off-by: Jens Axboe <axboe@fb.com>