nfs: nfs_kill_super() should call bdi_unregister() after killing super
authorJens Axboe <jens.axboe@oracle.com>
Thu, 17 Sep 2009 12:51:44 +0000 (14:51 +0200)
committerJens Axboe <jens.axboe@oracle.com>
Mon, 21 Sep 2009 13:40:32 +0000 (15:40 +0200)
Otherwise we could be attempting to flush data for a writeback
thread and bdi that have already disappeared.

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

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