Re: [PATCH] SMP support for drain local pages v2.

[Nigel Cunningham <ncunningham@linuxmail.org>]

Hi.

Andrew Morton wrote:
> I think we only need a single entry point.  Make it a new "drain_percpu_pages()"
> or such to break unconverted callers, switch callers of drain_local_pages()
> over to the new function.   It needs no SMP ifdefs in it - on_each_cpu() will
> do the right thing on UP.
> 
> But until something which needs this change is merged into the tree I'd say
> that this patch should live with the patch which requires it.

CPU hotplugging uses drain_local_pages, and shouldn't drain the pcp lists for all cpus. That's why I 
left the original version alone.

I'm submitting it now in preparation for merging, but Pavel's work on SMP support for swsusp should 
be using this too. (It's not, but it should be).

Nigel
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