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    SubjectRe: [PATCH 07/11] mm: Allocate kernel pages to the right memcg
    On 06/25/2012 10:07 PM, Tejun Heo wrote:
    > On Mon, Jun 25, 2012 at 06:15:24PM +0400, Glauber Costa wrote:
    >> When a process tries to allocate a page with the __GFP_KMEMCG flag,
    >> the page allocator will call the corresponding memcg functions to
    >> validate the allocation. Tasks in the root memcg can always proceed.
    >> To avoid adding markers to the page - and a kmem flag that would
    >> necessarily follow, as much as doing page_cgroup lookups for no
    >> reason, whoever is marking its allocations with __GFP_KMEMCG flag
    >> is responsible for telling the page allocator that this is such an
    >> allocation at free_pages() time. This is done by the invocation of
    >> __free_accounted_pages() and free_accounted_pages().
    > Shouldn't we be documenting that in the code somewhere, preferably in
    > the function comments?
    I can certainly do that.

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      Last update: 2012-06-26 01:21    [W:0.034 / U:193.252 seconds]
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