| Date | Fri, 13 Nov 2015 11:00:26 -0500 (EST) | Subject | Re: [PATCH 04/14] net: tcp_memcontrol: remove bogus hierarchy pressure propagation | From | David Miller <> |
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From: Johannes Weiner <hannes@cmpxchg.org> Date: Thu, 12 Nov 2015 18:41:23 -0500
> When a cgroup currently breaches its socket memory limit, it enters > memory pressure mode for itself and its *ancestors*. This throttles > transmission in unrelated sibling and cousin subtrees that have > nothing to do with the breached limit. > > On the contrary, breaching a limit should make that group and its > *children* enter memory pressure mode. But this happens already, > albeit lazily: if an ancestor limit is breached, siblings will enter > memory pressure on their own once the next packet arrives for them. > > So no additional hierarchy code is needed. Remove the bogus stuff. > > Signed-off-by: Johannes Weiner <hannes@cmpxchg.org>
Acked-by: David S. Miller <davem@davemloft.net>
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