From 9acf03cfb1fbecc058d3f223323e3ed97763f1e6 Mon Sep 17 00:00:00 2001
From: Jens Axboe <axboe@fb.com>
Date: Wed, 14 May 2014 08:22:56 -0600
Subject: [PATCH] mtip32xx: stop block hardware queues before quiescing IO

We need to stop the block layer queues to prevent new "normal"
IO from entering the driver, while we wait for existing commands
to finish.

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