Re: [Xen-devel][Pv-ops][PATCH 0/3] Resend: Netback multiple thread support

[Steven Smith <steven.smith@xxxxxxxxxx>]

> >>> Steven Smith <steven.smith@xxxxxxxxxx> 28.04.10 13:51 >>>
> >2) Introduce struct ext_page and use it everywhere you use it in the
> >   current patch.  This should be fairly small.
> In working through the patches to make them usable on our forward
> ported trees, I wondered what this is good for at all, for two reasons:
> 
> On 64-bits embedding the data directly into page->mapping would
> be possible without any other consideration.
> 
> Even on 32-bits embedding is possible based on the observation
> that the two fields together don't need more than 32 bits (idx
> always being less than MAX_PENDING_REQS [which itself could
> even grow significantly] and group being bounded by NR_CPUS).
Good point; I hadn't noticed that.  That would be a nicer way of doing
things.

It sounds like you've had a pretty good look at these patches.  Did
you see anything else worth pointing out?

Steven.

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