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Date: Wed, 26 May 2004 16:56:57 -0700
From: Andrew Morton <akpm@osdl.org>
To: Nigel Cunningham <ncunningham@linuxmail.org>
Cc: davej@redhat.com, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] SMP support for drain local pages v2.
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Nigel Cunningham <ncunningham@linuxmail.org> wrote:
>
> 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,

Early versions did, but not now.