Messages in this thread |  | | Date | Mon, 8 Jun 2009 13:52:05 +0300 | Subject | Re: [Bug #13319] Page allocation failures with b43 and p54usb | From | Pekka Enberg <> |
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On Mon, Jun 8, 2009 at 1:17 PM, Mel Gorman<mel@csn.ul.ie> wrote: > Pekka, assuming the request size is 800 bytes, and SLUB is using order-1 > pages for allocations of that size, what happened order-1 allocations > falling back to order-0 allocations as necessary. That logic exists, > right? If so, could it be broken?
That logic is in allocate_slab() and if the higher order allocation fails, we fall-back to struct kmem_cache ->min order. That in turn is set up in calculate_sizes() to get_order(size) so it seems pretty unlikely to me the allocation is 800 bytes. Of course, I could be missing something here and there's a bug in oo_make() or oo_order(). Hmm.
Pekka
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