linux-kernel - Re: [PATCH 1/7] cgroups: Shrink struct cgroup

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Message-ID: <AANLkTinLtTfp0VxhRtbk916R8g4skGAMGXKF9M1tRzvD@mail.gmail.com>
Date:	Tue, 9 Nov 2010 18:15:13 -0800
From:	Paul Menage <menage@...gle.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	"akpm >> Andrew Morton" <akpm@...ux-foundation.org>,
	Stephane Eranian <eranian@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	containers@...ts.linux-foundation.org
Subject: Re: [PATCH 1/7] cgroups: Shrink struct cgroup_subsys

On Tue, Nov 9, 2010 at 6:06 PM, Li Zefan <lizf@...fujitsu.com> wrote:
> That said, I'll happily drop this patch. It just came to me when I
> started to add new bool values to the structure. Or if you prefer
> bool xxx:1 or just bool xxx, I can do that.

bool xxx:1 is fine with me - I think it's worth keeping the semantics
of these being boolean flags as obvious as possible.

I just wouldn't invest much effort in similar patches in the future
(given that there are only likely to be, what, <20 instances of
cgroup_subsys in the kernel?). Shrinking a structure that had
potentially very many instances, such as css_set or cg_cgroup_link,
would be different of course.

Paul
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