Matt Mackall wrote:
quoted text
> We already know users (ie nommu memory usage reporting) are abusing this
> interface. Making them blow up is unnecessary. Just give them wrong
> answers. Issuing a warning might be a good idea for debugging.

But kobjsize() never calls ksize() with SLOB as it doesn't set PageSlab. 
Or are you talking about something else here?

Matt Mackall wrote:
quoted text
> Second, I'd prefer to keep this sort of debugging code out of SLOB.
> SLUB is much better suited to debugging allocator abuse.

Fair enough. I'll drop the patch.
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