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SubjectRe: disk head scheduling

On Fri, 19 Mar 1999, Stephen C. Tweedie wrote:

> > no, all requests (for all devices) are in a single 'queue'. (Per-major
> > device queues is candidate 2.3 feature, it's really simple)
>
> No, each major has its own queue, defined either by the
> blkdev[major].queue() strategy function or by
> blkdev[major].current_request. As far as IN_ORDER is concerned, it will
> only ever look at one such queue at a time.

oops, i got confused by the fact that i only have SCSI disks, which all
have the same request queue. But this is due to SCSI_MAJOR ...

-- mingo


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