Re: [PATCH v2 5/7] block: Delay default elevator initialization

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On Wed, Sep 04, 2019 at 02:07:39AM +0000, Damien Le Moal wrote:
> OK. I will move the registration earlier in device_add_disk(), before the region
> registration.
> 
> However, I would still like to keep the queue freeze to protect against buggy
> device drivers that call device_add_disk() with internal commands still going
> on. I do not think that there are any such driver, but just want to avoid
> problems. The queue freeze is also present for any user initiated elevator
> change, so in this respect, this is not any different and should not be a big
> problem. Thoughts ?

I don't really see the point, but there should be no harm it either
since a freeze of a non-busy queue should be fast.



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