linux-kernel - Re: [Patch03/05]- Containers: Initialization and Configfs interface

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Message-Id: <1158683595.18533.53.camel@galaxy.corp.google.com>
Date:	Tue, 19 Sep 2006 09:33:15 -0700
From:	Rohit Seth <rohitseth@...gle.com>
To:	Valdis.Kletnieks@...edu
Cc:	Andrew Morton <akpm@...l.org>, devel@...nvz.org,
	CKRM-Tech <ckrm-tech@...ts.sourceforge.net>,
	linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [Patch03/05]- Containers: Initialization and Configfs interface

On Tue, 2006-09-19 at 11:38 -0400, Valdis.Kletnieks@...edu wrote:
> On Thu, 14 Sep 2006 18:41:26 PDT, Rohit Seth said:
> 
> > --- linux-2.6.18-rc6-mm2.org/kernel/container_configfs.c	1969-12-31 16:00:00.000000000 -0800
> > +++ linux-2.6.18-rc6-mm2.ctn/kernel/container_configfs.c	2006-09-14 16:18:45.000000000 -0700
> 
> > +static ssize_t simple_containerfs_attr_show(struct config_item *item,
> > +		struct configfs_attribute *attr,
> > +		char *page)
> ...
> > +	switch (ctfs_attr->idx) {
> > +	case CONFIGFS_CTN_ATTR_ID:
> > +		tmp = sc->ctn.id;
> > +		break;
> ...
> > +	return sprintf(page, "%ld\n", tmp);
> 
> What use is this value, given that we already have containers/user_friendly_name
> to use in the filesystem namespace?  Or is this a mostly-debugging thing?

I think ids (numeric numbers) will be useful when printing the
information in /proc/<pid>/container  User land tools don't necessarily
have to parse the (name) string in that case.

-rohit

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