From 3fd5940cb2e47a61dcff4108f39be4c72cb4dace Mon Sep 17 00:00:00 2001
From: Keith Busch <keith.busch@intel.com>
Date: Thu, 8 Jan 2015 08:53:56 -0700
Subject: [PATCH] blk-mq: Wake tasks entering queue on dying

When the queue is set to dying, wake up tasks that are waiting on frozen
queue so they realize it is dying and abandon their request.

Signed-off-by: Keith Busch <keith.busch@intel.com>

Modified by me to add a code comment on the need for the wakeup.

Signed-off-by: Jens Axboe <axboe@fb.com>
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