Re: [PATCH 3/3] mm: slub: Default slub_max_order to 0

[James Bottomley]

On Thu, 2011-05-12 at 11:27 -0500, Christoph Lameter wrote:
> On Thu, 12 May 2011, James Bottomley wrote:
> 
> > However, the fact remains that this seems to be a slub problem and it
> > needs fixing.
> 
> Why are you so fixed on slub in these matters?

Because, as has been hashed out in the thread, changing SLUB to SLAB
makes the hang go away.

>  Its an key component but
> there is a high interaction with other subsystems. There was no recent
> change in slub that changed the order of allocations. There were changes
> affecting the reclaim logic. Slub has been working just fine with the
> existing allocation schemes for a long time.

So suggest an alternative root cause and a test to expose it.

James


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