[Devel] Re: [PATCH 1/7] cgroups: Shrink struct cgroup_subsys

[Paul Menage]

On Sun, Nov 7, 2010 at 9:23 PM, Li Zefan <lizf at cn.fujitsu.com> wrote:
>
> bool active;
> bool disabled;
> ...
>
> ?
>
> With alignment 5-8 bool values == 8 bytes in 64-bit machine, compared to
> 4 bytes with the approach this patch takes.

I meant specifying it as:

bool active:1;
bool disabled:1;

i.e. keeping the bit-sized flags but also keeping the bool semantics.
Having said that, I'm not really sure why saving 12 bytes per
subsystem is worth a patch.

Paul
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