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    SubjectRe: [PATCH] Optimize lock in queue unplugging
    On Wed, Apr 30, 2008 at 09:14:15AM +0200, Jens Axboe wrote:
    > So it's basically dm calling into blk_unplug() all the time, which
    > doesn't check if the queue is plugged. The reason why I didn't like the
    > initial patch is that ->unplug_fn() really should not be called unless
    > the queue IS plugged. So how about this instead:
    > That's a lot more appropriate, imho.

    Makes sense to me, ack.


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