From: Mike Snitzer <snitzer@redhat.com>
Date: Thu, 13 Jan 2011 19:59:46 +0000 (+0000)
Subject: dm mpath: disable blk_abort_queue
X-Git-Tag: v2.6.38-rc1~221^2~30
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=09c9d4c9b6a2b5909ae3c6265e4cd3820b636863;p=pandora-kernel.git

dm mpath: disable blk_abort_queue

Revert commit 224cb3e981f1b2f9f93dbd49eaef505d17d894c2
  dm: Call blk_abort_queue on failed paths

Multipath began to use blk_abort_queue() to allow for
lower latency path deactivation.  This was found to
cause list corruption:

   the cmd gets blk_abort_queued/timedout run on it and the scsi eh
   somehow is able to complete and run scsi_queue_insert while
   scsi_request_fn is still trying to process the request.

   https://www.redhat.com/archives/dm-devel/2010-November/msg00085.html

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
Cc: Mike Anderson <andmike@linux.vnet.ibm.com>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: stable@kernel.org
---

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