linux-kernel - Re: [PATCH v2 0/3] cgroup: add xattr support

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Date:	Sun, 4 Mar 2012 10:05:16 -0800
From:	Tejun Heo <tj@...nel.org>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	Lennart Poettering <mzxreary@...inter.de>,
	Kay Sievers <kay.sievers@...y.org>,
	Hugh Dickins <hughd@...gle.com>,
	LKML <linux-kernel@...r.kernel.org>,
	Cgroups <cgroups@...r.kernel.org>, Eric Paris <eparis@...hat.com>
Subject: Re: [PATCH v2 0/3] cgroup: add xattr support

Hello, Li.

Sorry about the delay.  Was on vacation.

On Thu, Mar 01, 2012 at 02:16:57PM +0800, Li Zefan wrote:
> This can be used to attach metadata to a cgroup, which is required
> by systemd.
> 
> As lazy as I am, here just quoted from Lennart for the detailed use
> cases:

I much prefer this version but would prefer to deal with this in the
next merge window as we're already on rc6.  On a cursory look...

* I'm not sure kmem_ is a good prefix.  It sucks that xattr values are
  stored in kmem w/o size limit and we probably want to improve on
  both fronts in the future.  Wouldn't it be better to name them
  simple_*() and put them in fs/libfs.c?

* I don't think we want CONFIG option for cgroupfs xattr.  Let's just
  add a mount option.

Thanks.

-- 
tejun
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