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Re: [PATCH 04/14] net: tcp_memcontrol: remove bogus hierarchy pressure propagation

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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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[PATCH 04/14] net: tcp_memcontrol: remove bogus hierarchy pressure propagation Johannes Weiner <hannes@cmpxchg.org> - 2015-11-13 00:50 +0100
  Re: [PATCH 04/14] net: tcp_memcontrol: remove bogus hierarchy  pressure propagation David Miller <davem@davemloft.net> - 2015-11-13 17:10 +0100

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