Messages in this thread | | | Subject | Re: [RFC][PATCH 3/7] Data structures changes for RSS accounting | From | Dave Hansen <> | Date | Mon, 12 Mar 2007 09:48:04 -0700 |
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On Mon, 2007-03-12 at 19:16 +0300, Kirill Korotaev wrote: > now VE2 maps the same page. You can't determine whether this page is mapped > to this container or another one w/o page->container pointer.
Hi Kirill,
I thought we can always get from the page to the VMA. rmap provides this to us via page->mapping and the 'struct address_space' or anon_vma. Do we agree on that?
We can also get from the vma to the mm very easily, via vma->vm_mm, right?
We can also get from a task to the container quite easily.
So, the only question becomes whether there is a 1:1 relationship between mm_structs and containers. Does each mm_struct belong to one and only one container? Basically, can a threaded process have different threads in different containers?
It seems that we could bridge the gap pretty easily by either assigning each mm_struct to a container directly, or putting some kind of task-to-mm lookup. Perhaps just a list like mm->tasks_using_this_mm_list.
Not rocket science, right?
-- Dave
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