Hello!
I think block i/o subsystem must be redesigned ...
On Thu, Feb 10, 2000 at 05:44:54PM -0800, Bruce Thompson wrote:
> Sorry, but I must respectfully disagree. The time to service the
> request specifically is _not_ unbounded, it's bounded by the size of
> the disk.
>
> In general I would assert that the probability of the user process
> swamping the driver in this manner is extremely low, or else the
> relative priority between the driver and the user process is mixed
> up. I would further argue that before sending the block up to the
> user process you really ought to kick-off servicing block 11 since
> that's going to take a long time and the user process should be able
> to proceed in the mean time.
>
> Cheers,
> Bruce.
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