Re: page allocator bug in 3.16?

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On 09/26/2014 01:52 AM, Peter Hurley wrote:
> On 09/25/2014 03:35 PM, Chuck Ebbert wrote:
>> There are six ttm patches queued for 3.16.4:
>>
>> drm-ttm-choose-a-pool-to-shrink-correctly-in-ttm_dma_pool_shrink_scan.patch
>> drm-ttm-fix-handling-of-ttm_pl_flag_topdown-v2.patch
>> drm-ttm-fix-possible-division-by-0-in-ttm_dma_pool_shrink_scan.patch
>> drm-ttm-fix-possible-stack-overflow-by-recursive-shrinker-calls.patch
>> drm-ttm-pass-gfp-flags-in-order-to-avoid-deadlock.patch
>> drm-ttm-use-mutex_trylock-to-avoid-deadlock-inside-shrinker-functions.patch
> Thanks for info, Chuck.
>
> Unfortunately, none of these fix TTM dma allocation doing CMA dma allocation,
> which is the root problem.
>
> Regards,
> Peter Hurley

The problem is not really in TTM but in CMA, There was a guy offering to
fix this in the CMA code but I guess he didn't probably because he
didn't receive any feedback.


/Thomas

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