ttm: merge ttm_backend & ttm_tt, introduce ttm dma allocator V5

[Thomas Hellstrom]

On 11/14/2011 05:02 PM, Jerome Glisse wrote:
> On Mon, Nov 14, 2011 at 9:49 AM, Thomas Hellstrom<thellstrom at vmware.com>  wrote:
>    
>> On 11/11/2011 11:47 PM, j.glisse at gmail.com wrote:
>>      
>>> So attached is updated serie of patch with fixes for swaping issue
>>> that also impacted memory accounting.
>>>        
>> Jerome,
>> Out of interest, what was the swapping issue?
>>
>> /Thomas
>>
>>
>>      
> The page list was NULL and some access ended up freaking the kernel
> and oom kicked in for some reason i still don't understand. Bottom
> line things were going south in a split second leaving me with no log
> or access, i thought it was accounting not working as it was what i
> tested at the time. I should have tested accouting without the
> patchset
>
> Cheers,
> Jerome
>    

Still, I think you have a point in the fact that *when* finally the OOM 
killer kicks in,
it probably doesn't have a way to associate user-space created bos with 
processes
and kill the right process.

/Thomas