linux-kernel - Re: [PATCH] cgroups: update documentation about css

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Date:	Tue, 17 Feb 2009 17:31:52 -0800
From:	Paul Menage <menage@...gle.com>
To:	Li Zefan <lizf@...fujitsu.com>
Cc:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux Containers <containers@...ts.linux-foundation.org>
Subject: Re: [PATCH] cgroups: update documentation about css_set hash table

On Tue, Feb 17, 2009 at 5:31 PM, Li Zefan <lizf@...fujitsu.com> wrote:
> The css_set hash table was introduced in 2.6.26, so update the documentation
> accordingly.
>
> Signed-off-by: Li Zefan <lizf@...fujitsu.com>

Acked-by: Paul Menage <menage@...gle.com>

> ---
>  Documentation/cgroups/cgroups.txt |    6 ++----
>  1 files changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/cgroups/cgroups.txt b/Documentation/cgroups/cgroups.txt
> index d9e5d6f..93feb84 100644
> --- a/Documentation/cgroups/cgroups.txt
> +++ b/Documentation/cgroups/cgroups.txt
> @@ -252,10 +252,8 @@ cgroup file system directories.
>  When a task is moved from one cgroup to another, it gets a new
>  css_set pointer - if there's an already existing css_set with the
>  desired collection of cgroups then that group is reused, else a new
> -css_set is allocated. Note that the current implementation uses a
> -linear search to locate an appropriate existing css_set, so isn't
> -very efficient. A future version will use a hash table for better
> -performance.
> +css_set is allocated. The appropriate existing css_set is located by
> +looking into a hash table.
>
>  To allow access from a cgroup to the css_sets (and hence tasks)
>  that comprise it, a set of cg_cgroup_link objects form a lattice;
> --
> 1.5.4.rc3
>
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