Re: [PATCH] memory hotplug: run lru_add_drain_all() on each cpu

From: KOSAKI Motohiro
Date: Sat Dec 06 2008 - 23:43:35 EST

CC to Lee Schermerhorn

> On Fri, 2008-12-05 at 14:08 +0100, Gerald Schaefer wrote:
> >
> > As explained above, the per-cpu pagevec layout should be independent
> > from NUMA or UNEVICTABLE_LRU, so I guess the right thing to do here
> > is completely remove the #ifdef as in the patch from Kosaki Motohiro
> > (or at least replace it with a CONFIG_SMP as suggested by Kamezawa
> > Hiroyuki).
> Thanks for looking into it deeper. That CONFIG_SMP thing really does
> look like the right solution.

Lee, Could you read this thread and explain why you add ifdef CONFIG_UNEVICTABLE_LRU?
I am not sure about that Dave's proposal is safe change. (but I guess he is right)

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