Re: [PATCH] Fix disk statistic reporting to include all disks

From: Linus Torvalds (
Date: Tue Aug 29 2000 - 18:22:04 EST

On Wed, 30 Aug 2000, Jens Axboe wrote:
> Sounds sane, but what about drivers that don't really use the request
> queue structure? Stuff like lvm, md, rd (with Neil's patch to fix the
> lru_list deadlock), and probably new loop.

Every single driver must have a request_queue: as far as the ll_rw_block
layer is concerned, a NULL request-queue means that the device doesn't
exist. It will even print out a message saying so..

I'm not sure what you mean about lvm/md/rd not having request queues.


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