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    SubjectRe: [RFC][PATCH v7 11/14] memcg: create support routines for writeback
    On Fri, 13 May 2011 01:47:50 -0700
    Greg Thelen <gthelen@google.com> wrote:

    > Introduce memcg routines to assist in per-memcg writeback:
    >
    > - mem_cgroups_over_bground_dirty_thresh() determines if any cgroups need
    > writeback because they are over their dirty memory threshold.
    >
    > - should_writeback_mem_cgroup_inode() determines if an inode is
    > contributing pages to an over-limit memcg.
    >
    > - mem_cgroup_writeback_done() is used periodically during writeback to
    > update memcg writeback data.
    >
    > Signed-off-by: Greg Thelen <gthelen@google.com>

    Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>

    I'm okay with the bitmap..then, problem will be when set/clear wbc->for_cgroup...




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