linux-kernel - Re: [PATCH 1/2] cgroup: export list of delegatable control files using sysfs

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Message-ID: <20171106173854.GE3252168@devbig577.frc2.facebook.com>
Date:   Mon, 6 Nov 2017 09:38:54 -0800
From:   Tejun Heo <tj@...nel.org>
To:     Roman Gushchin <guro@...com>
Cc:     linux-kernel@...r.kernel.org, kernel-team@...com
Subject: Re: [PATCH 1/2] cgroup: export list of delegatable control files
 using sysfs

Hello, Roman.

On Fri, Nov 03, 2017 at 10:56:31AM -0700, Tejun Heo wrote:
> On Fri, Nov 03, 2017 at 01:46:02PM -0400, Roman Gushchin wrote:
> > Delegatable cgroup v2 control files may require special handling
> > (e.g. chowning), and the exact list of such files varies between
> > kernel versions (and likely to be extended in the future).
> > 
> > To guarantee correctness of this list and simplify the life
> > of userspace (systemd, first of all), let's export the list
> > via /sys/kernel/cgroup/delegates pseudo-file.
> > 
> > Format is siple: each control file name is printed on a new line.
> > Example:
> >   $ cat /sys/kernel/cgroup/delegates
> 
> Generally looks good to me but I'm not sure whether "delegates" is the
> right name for the file.  According to dictionary, it doesn't seem to
> match too well to what we wanna mean here, which is "these files
> belong to the child and should be transferred to the child when
> delegating the cgroup".

So, "delegates" as the plural noun means people who represent.  Let's
go with "delegate" which can be read as a verb term meaning "delegate
these files together".

Thanks.

-- 
tejun