linux-kernel - Re: [RFC][PATCH 7/7] CGroup API: Update cpusets to use cgroup structured file API

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Date:	Sun, 17 Feb 2008 09:18:44 -0800
From:	"Paul Menage" <menage@...gle.com>
To:	"Paul Jackson" <pj@....com>
Cc:	balbir@...ibm.com, xemul@...nvz.org,
	kamezawa.hiroyu@...fujitsu.com, vatsa@...ux.vnet.ibm.com,
	akpm@...ux-foundation.org, containers@...ts.linux-foundation.org,
	linux-kernel@...r.kernel.org
Subject: Re: [RFC][PATCH 7/7] CGroup API: Update cpusets to use cgroup structured file API

On Feb 16, 2008 7:29 PM, Paul Jackson <pj@....com> wrote:
>
> From: Paul Jackson <pj@....com>
>
> Strip all trailing whitespace (such as carriage returns)
> when parsing integer writes to cgroup files, not just
> one trailing newline if present.

Sounds like a good idea to me. Thanks for this.

>
> Signed-off-by: Paul Jackson <pj@....com>
> Cc: Paul Menage <menage@...gle.com>

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

>
> ---
>  kernel/cgroup.c |    5 +----
>  1 file changed, 1 insertion(+), 4 deletions(-)
>
> --- 2.6.24-mm1.orig/kernel/cgroup.c     2008-02-16 04:20:33.000000000 -0800
> +++ 2.6.24-mm1/kernel/cgroup.c  2008-02-16 19:00:41.207478218 -0800
> @@ -1321,10 +1321,7 @@ static ssize_t cgroup_write_uint(struct
>                 return -EFAULT;
>
>         buffer[nbytes] = 0;     /* nul-terminate */
> -
> -       /* strip newline if necessary */
> -       if (nbytes && (buffer[nbytes-1] == '\n'))
> -               buffer[nbytes-1] = 0;
> +       strstrip(buffer);       /* strip -just- trailing whitespace */
>         val = simple_strtoull(buffer, &end, 0);
>         if (*end)
>                 return -EINVAL;
>
>
> --
>                   I won't rest till it's the best ...
>                   Programmer, Linux Scalability
>                   Paul Jackson <pj@....com> 1.940.382.4214
>
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