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

From: Linus Torvalds (
Date: Tue Aug 29 2000 - 18:24:37 EST

On Wed, 30 Aug 2000, Jens Axboe wrote:

> On Wed, Aug 30 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.
> Of course lvm and md get statistics accounted for the low devices...

No, I think you actually want to double-count here: I think it is sensible
to have both a low-level statistics _and_ a "md" statistic. It could be
useful for showing clearly how the requests are distributed.


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