lkml.org 
[lkml]   [2012]   [Jul]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [patch 01/11] mm: memcg: fix compaction/migration failing due to memcg limits
    (2012/07/05 9:44), Johannes Weiner wrote:
    > Compaction (and page migration in general) can currently be hindered
    > through pages being owned by memory cgroups that are at their limits
    > and unreclaimable.
    >
    > The reason is that the replacement page is being charged against the
    > limit while the page being replaced is also still charged. But this
    > seems unnecessary, given that only one of the two pages will still be
    > in use after migration finishes.
    >
    > This patch changes the memcg migration sequence so that the
    > replacement page is not charged. Whatever page is still in use after
    > successful or failed migration gets to keep the charge of the page
    > that was going to be replaced.
    >
    > Reported-by: David Rientjes <rientjes@google.com>
    > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>

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



    \
     
     \ /
      Last update: 2012-07-09 05:21    [W:0.024 / U:29.820 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site