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    SubjectRe: [RFC][PATCH] Remove cgroup member from struct page
    On Tuesday 09 September 2008 13:57, KAMEZAWA Hiroyuki wrote:
    > On Mon, 8 Sep 2008 20:58:10 +0530
    > Balbir Singh <> wrote:
    > > Sorry for the delay in sending out the new patch, I am traveling and
    > > thus a little less responsive. Here is the update patch
    > Hmm.. I've considered this approach for a while and my answer is that
    > this is not what you really want.
    > Because you just moves the placement of pointer from memmap to
    > radix_tree both in GFP_KERNEL, total kernel memory usage is not changed.
    > So, at least, you have to add some address calculation (as I did in March)
    > to getting address of page_cgroup. But page_cgroup itself consumes 32bytes
    > per page. Then.....

    Just keep in mind that an important point is to make it more attractive
    to configure cgroup into the kernel, but have it disabled or unused at

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