Messages in this thread | | | Date | Tue, 20 Jan 2015 23:33:27 +0800 | From | Zhang Yanfei <> | Subject | Re: [PATCH] CMA: treat free cma pages as non-free if not ALLOC_CMA on watermark checking |
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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@xiaomi.com> >> >> 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?
Thanks.
> would be more desirable than more hooks in mm fast path in various aspect. > (ie, remove lots of hooks in hot path of MM, don't need reclaim hooks > for special CMA pages, don't need custom fair allocation for CMA). > > Joonsoo is investigating the direction so please wait. > If it turns out we have lots of hurdle to go that way, > this direction(ie, putting more hooks) should be second plan. > > Thanks. >
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