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Christoph Hellwig authored
We only need the stats lock (aka preempt_disable()) for updating the states, not for looking up or dropping the hd_struct reference. Signed-off-by:
Christoph Hellwig <hch@lst.de> Reviewed-by:
Konstantin Khlebnikov <khlebnikov@yandex-team.ru> Signed-off-by:
Jens Axboe <axboe@kernel.dk>
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