(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@xxxxxxxxxx> > Signed-off-by: Johannes Weiner <hannes@xxxxxxxxxxx> Acked-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@xxxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe cgroups" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
