Re: [PATCH] CMA: treat free cma pages as non-free if not ALLOC_CMA on watermark checking

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On Tue, Jan 20, 2015 at 11:33:27PM +0800, Zhang Yanfei wrote:
> Hello Minchan,
> 
> How are you?
> 
> 在 2015/1/19 14:55, Minchan Kim 写道:
> > Hello,
> > 
> > On Sun, Jan 18, 2015 at 04:32:59PM +0800, Hui Zhu wrote:
> >> From: Hui Zhu <zhuhui@xxxxxxxxxx>
> >>
> >> The original of this patch [1] is part of Joonsoo's CMA patch series.
> >> I made a patch [2] to fix the issue of this patch.  Joonsoo reminded me
> >> that this issue affect current kernel too.  So made a new one for upstream.
> > 
> > Recently, we found many problems of CMA and Joonsoo tried to add more
> > hooks into MM like agressive allocation but I suggested adding new zone
> 
> Just out of curiosity, "new zone"? Something like movable zone?

Yes, I named it as ZONE_CMA. Maybe I can send prototype of
implementation within 1 or 2 weeks.

Thanks.

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