From: Shaohua Li <shli@fusionio.com>
Date: Wed, 20 Nov 2013 01:57:24 +0000 (-0700)
Subject: virtio-blk: virtqueue_kick() must be ordered with other virtqueue operations
X-Git-Tag: v3.13-rc1~30^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f02b9ac35a47dff745c7637fbc095f01cc03646e;p=pandora-kernel.git

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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