Re: page allocation failure message kernel 2.6.31.4 (tty-related)

[Mel Gorman]

On Wed, Oct 21, 2009 at 02:16:56PM -0700, David Rientjes wrote:
> On Wed, 21 Oct 2009, Jiri Kosina wrote:
> 
> > [ tty related CCs added ]
> > 
> 
> I think this is probably a duplicate of the GFP_ATOMIC page allocator 
> issue at http://bugzilla.kernel.org/show_bug.cgi?id=14141 more than a tty 
> issue.
> 

Probably.

> Have we tried rolling back the refactored page allocator changes in 2.6.31 
> to see if the logic has changed in other ways unrelated to kswapd?  

No, but bisects around that area were inconclusive at best and there
are dependants that made backing it out problematic.

> There's subtleties like where rt tasks are given ALLOC_HARDER even when 
> in_interrupt() that are different from previous kernels and could reduce 
> the amount of ALLOC_HIGH and ALLOC_HARDER memory that can be allocated.
> 

/me checks again

I think you're right. Correct it with something like?

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