Re: [PATCH net v3 3/3] sock: Ignore memcg pressure heuristics when raising allocated

[Paolo Abeni <pabeni@redhat.com>]

On Thu, 2023-10-19 at 20:00 +0800, Abel Wu wrote:
> Before sockets became aware of net-memcg's memory pressure since
> commit e1aab161e013 ("socket: initial cgroup code."), the memory
> usage would be granted to raise if below average even when under
> protocol's pressure. This provides fairness among the sockets of
> same protocol.
> 
> That commit changes this because the heuristic will also be
> effective when only memcg is under pressure which makes no sense.
> So revert that behavior.
> 
> After reverting, __sk_mem_raise_allocated() no longer considers
> memcg's pressure. As memcgs are isolated from each other w.r.t.
> memory accounting, consuming one's budget won't affect others.
> So except the places where buffer sizes are needed to be tuned,
> allow workloads to use the memory they are provisioned.
> 
> Signed-off-by: Abel Wu <wuyun.abel@bytedance.com>
> Acked-by: Shakeel Butt <shakeelb@google.com>
> Acked-by: Paolo Abeni <pabeni@redhat.com>

It's totally not clear to me why you changed the target tree from net-
next to net ?!? This is net-next material, I asked to strip the fixes
tag exactly for that reason.

Since there is agreement on this series and we are late in the cycle, I
would avoid a re-post (we can apply the series to net-next anyway) but
any clarification on the target tree change will be appreciated,
thanks!

Paolo