> > Yes, it could be per-queue. That would add complexity to
> > the already-murky fs/fs-writeback.c. It that justifiable?
Doing it per-queue is right, doing is per-system is clearly wrong.
> I dunno, it's up to you. I guess this is mainly IDE specific anyways,
SCSI can do spindowns, too, and it *needs* kernel support for that. On
IDE, this can be (in a racy way) done userspace, too.
> but you apply the same logic to just one (for instance) of your disks on
> a home desktop system.
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