| Re: [ckrm-tech] [RFC][PATCH 5/7] UBC: kernel memory accounting (core) [message #5368 is a reply to message #5340] |
Fri, 18 August 2006 08:52   |
dev
Messages: 1693
Registered: September 2005
Location: Moscow
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Senior Member |
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Rohit Seth wrote:
> On Thu, 2006-08-17 at 10:23 -0700, Dave Hansen wrote:
>
>>On Thu, 2006-08-17 at 10:16 -0700, Rohit Seth wrote:
>>
>>>>That said, it sure is simpler to implement, so I'm all for it!
>>>
>>>hmm, not sure why it is simpler.
>>
>>When you ask the question, "which container owns this page?", you don't
>>have to look far,
>
>
> as in page->mapping->container for user land?
in case of anon_vma, page->mapping can be the same
for 2 pages beloning to different containers.
>>nor is it ambiguous in any way. It is very strict,
>>and very straightforward.
>
> What additional ambiguity you have when inode or task structures have
> the required information.
inodes can belong to multiple containers and so do the pages.
Kirill
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