Re: [Xen-devel] [PATCH][RFC] Serialize scrubbing pages

[Kouya Shimura <kouya@xxxxxxxxxxxxxx>]

Hi Keir,

I'm afraid that cset18305:f10d436d9a9e makes free_domheap_page freeze. 
Inner loop of page_scrub_softirq which keeps page_scrub_lock takes
at least 1 millisec. Is it OK? 
That's why I prepare a new spinlock.

Thanks,
Kouya

Keir Fraser writes:
> On 11/8/08 11:12, "Keir Fraser" <keir.fraser@xxxxxxxxxxxxx> wrote:
> 
> > I've considered the possibility of moving this kind of thing into a service
> > domain. Then it would be visible to the scheduler and be less of a hack.
> > 
> > Anyhow, I hadn't considered the contention for the heap_lock. I think your
> > patch is good and I will apply it for 3.3.
> 
> I've simplified the patch and then checked it in. There was no need for a
> new spinlock as it strictly dominated the old one.

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