Re: [linux-pm] [PATCH 0/8] Suspend block api (version 8)

[Peter Zijlstra]

On Fri, 2010-05-28 at 00:50 +0100, Alan Cox wrote:
> Today "idle" means "no task running"
> 
> If you are prepared to rephrase that as "no task that matters is running"
> what would need to answer ?

I'm not sure we need or want to go there.

Why not simply let upatedb block on its IO because its QoS policy tells
us that its IO priority is idle. Therefore it will not avoid the IO
device from going idle and indefinitely delaying servicing requests.

When updatedb blocks, the runqueue becomes empty and we gain goodness.

Or are we talking about the same thing?

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/