linux-kernel - Re: [PATCH] Update documentation of cgroups tasks and procs files

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Message-ID: <4ABAC0A7.3050307@cn.fujitsu.com>
Date:	Thu, 24 Sep 2009 08:43:19 +0800
From:	Li Zefan <lizf@...fujitsu.com>
To:	Paul Menage <menage@...gle.com>
CC:	akpm@...ux-foundation.org, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] Update documentation of cgroups tasks and procs files

Paul Menage wrote:
> Update documentation of cgroups tasks and procs files
> 
> Document the cgroup.procs file.
> 
> Clarify the semantics of the cgroup.procs and tasks files.  Although
> the current cgroup.procs interface returns a sorted and uniqified list
> of pids, potential future performance enhancements could result in
> those properties being removed - explicitly document this aspect of
> the API.
> 
> There are no existing users of cgroup.procs, so compatibility isn't an
> issue.  There are users of the "tasks" file, but none that would
> appear to break in the event of the sorted property being broken. The
> standard "libcpuset" explicitly sorts the results of reading from the
> tasks file, and "libcg" and other users don't appear to care about
> ordering.
> 
> Signed-off-by: Paul Menage <menage@...gle.com>
> 

Reviewed-by: Li Zefan <lizf@...fujitsu.com>
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