Messages in this thread | | | Date | Fri, 18 Aug 2006 12:29:33 +0400 | From | Kirill Korotaev <> | Subject | Re: [ckrm-tech] [RFC][PATCH 5/7] UBC: kernel memory accounting (core) |
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Rik van Riel wrote: > Dave Hansen wrote: > >> My main thought is that _everybody_ is going to have to live with the >> entry in the 'struct page'. Distros ship one kernel for everybody, and >> the cost will be paid by those not even using any kind of resource >> control or containers. > > > Every userspace or page cache page will be in an object > though. Could we do the pointer on a per object (mapping, > anon vma, ...) basis? in this case no memory fractions accounting is possible :/ please, note, this field added by this patchset is in union and used by user pages accounting as well.
> Kernel pages are not using all of their struct page entries, > so we could overload a field. yeah, we can. probably mapping. but as I said we use the same pointer for user pages accounting as well.
> It all depends on how much we really care about not growing > struct page :) so what is your opinion? Kernel compiled w/o UBC do not introduce additional pointer.
Thanks, Kirill
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