From f02b9ac35a47dff745c7637fbc095f01cc03646e Mon Sep 17 00:00:00 2001
From: Shaohua Li <shli@fusionio.com>
Date: Tue, 19 Nov 2013 18:57:24 -0700
Subject: [PATCH] virtio-blk: virtqueue_kick() must be ordered with other
 virtqueue operations

It isn't safe to call it without holding the vblk->vq_lock.

Reported-by: Dave Chinner <david@fromorbit.com>
Signed-off-by: Shaohua Li <shli@fusionio.com>

Fixed another condition of virtqueue_kick() not holding the lock.

Signed-off-by: Jens Axboe <axboe@kernel.dk>
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