Messages in this thread | | | Date | Fri, 1 Aug 2008 20:22:27 +0200 | From | Jens Axboe <> | Subject | Re: [PULL REQUEST] md bug fixes and minor improvements |
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On Fri, Aug 01 2008, Linus Torvalds wrote: > > > On Fri, 1 Aug 2008, Jens Axboe wrote: > > + spin_lock_irq(&bitmap->mddev->queue->queue_lock); > > blk_plug_device(bitmap->mddev->queue); > > + spin_unlock_irq(&bitmap->mddev->queue->queue_lock); > > Can we please not have a chain of three dereferences in a row like that? > That's an almost certain sign that we should either have a helper function > or just a variable, and do it as > > queue = bitmap->mddev->queue; > > spin_lock_irq(&queue->queue_lock); > blk_plug_device(queue); > spin_unlock_irq(&queue->queue_lock); > > Hmm? Perhaps the helper function is cleaner, ie > > static inline blk_plug_device_unlocked(struct request_queue * queue) > {.. > > instead. That, of course, would have to use spin_lock_irqsave().
I rather like that. I've got a few simpler things to push, I'll queue it up with that and send you a pull request later today.
-- Jens Axboe
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