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Date:	Thu, 15 Dec 2011 12:00:28 -0500 (EST)
From:	David Miller <>
Subject: Re: [PATCH 2/2] Explicitly call tcp creation and init from

From: Glauber Costa <>
Date: Thu, 15 Dec 2011 13:34:32 +0400

> Walking the proto_list holds a read_lock, which prevents us from doing
> allocations. Splitting the tcp create function into create + init is
> good, but it is not enough since create_files will do allocations as well
> (dentry ones, mostly).
> Since this does not involve any protocol state, I propose we call the tcp
> functions explicitly from memcontrol.c
> With this, we lose by now the ability of doing cgroup memcontrol for
> protocols that are loaded as modules. But at least the ones I have in mind
> won't really need it (tcp_ipv6 being the only one, but it uses the same data
> structures as tcp_ipv4). So I believe this to be the simpler solution to this
> problem.
> Signed-off-by: Glauber Costa <>

This is an unnecessary limitation, please fix this properly otherwise
DCCP, SCTP, etc. won't be supportable with this stuff.
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