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    SubjectRe: [RFC] [PATCH -mm] cgroup: limit the amount of dirty file pages wrote:
    > ----- Original Message -----
    >> This is a totally experimental patch against 2.6.27-rc5-mm1.
    >> It allows to control how much dirty file pages a cgroup can have at any
    >> given time. This feature is supposed to be strictly connected to a
    >> generic cgroup IO controller (see below).
    >> Interface: a new entry "filedirty" is added to the file memory.stat,
    >> reporting the number of dirty file pages (in pages), and a new file
    >> memory.file_dirty_limit_in_pages is added in the cgroup filesystem to
    >> show/set the current limit.
    > Before staring patch review, why not dirty_ratio per memcg ?
    > Is there difficult implementation issue ?

    mmmh.. maybe it's a bit more complex (would add some overhead?) to
    translate the limit from dirty_ratio into pages or bytes, because we
    need to evaluate it in function of the per-cgroup dirtyable memory (lru
    pages and free pages I suppose). Maybe it's enough to implement it
    directly in determine_dirtyable_memory().

    I can try to implement it and post a new patch.


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