On Tue, 13 May 2014, Sasha Levin wrote:
> On 05/05/2014 11:50 AM, Vlastimil Babka wrote:
> > So in the end this VM_DEBUG check probably cannot work anymore for 
> > MIGRATE_RESERVE, only for CMA. I'm not sure if it's worth keeping it only 
> > for CMA, what are the CMA guys' opinions on that?
> 
> The way I understood it is that this patch is wrong, but it's still
> alive in -mm. Should it still be there?

I agree that it should be dropped.  I did not follow the discussion,
but mmotm soon gives me BUG at mm/page_alloc.c:1242 under swapping load.

Hugh
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