From: Christoph Hellwig <hch@lst.de>
Date: Tue, 8 Jul 2014 10:25:28 +0000 (+0200)
Subject: block: don't assume last put of shared tags is for the host
X-Git-Tag: v3.2.64~233
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=60d940c6fd6252f6307ecacd49acac54cc6d8e8d;p=pandora-kernel.git

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

commit d45b3279a5a2252cafcd665bbf2db8c9b31ef783 upstream.

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>
Signed-off-by: Jens Axboe <axboe@fb.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

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