linux-kernel - Re: [Patch] proc: drop write permission on 'timer

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Message-ID: <4A8A0B0D.6080400@redhat.com>
Date:	Tue, 18 Aug 2009 09:59:41 +0800
From:	Amerigo Wang <amwang@...hat.com>
To:	Christoph Lameter <cl@...ux-foundation.org>
CC:	Pekka Enberg <penberg@...helsinki.fi>, Ingo Molnar <mingo@...e.hu>,
	linux-kernel@...r.kernel.org,
	Vegard Nossum <vegard.nossum@...il.com>,
	Eduard - Gabriel Munteanu <eduard.munteanu@...ux360.ro>,
	Thomas Gleixner <tglx@...utronix.de>, linux-mm@...ck.org,
	David Rientjes <rientjes@...gle.com>,
	Matt Mackall <mpm@...enic.com>,
	Arjan van de Ven <arjan@...ux.intel.com>
Subject: Re: [Patch] proc: drop write permission on 'timer_list' and 'slabinfo'

Christoph Lameter wrote:
> On Mon, 17 Aug 2009, Pekka Enberg wrote:
>
>   
>>> slab needs the write permissions for tuning!
>>>       
>> Oh, crap, you're right, I had forgotten about that. It's probably best to keep
>> slub permissions as-is, no?
>>     

Oops! I misread the code... sorry.

>
> slub perms can be changed. The patch is okay for that. But there is no
> write method in slub. Effectively it makes no difference. Just the
> display is nicer in /proc.
>
>
>   
Ah, ok, I update this part of patch, attached.

Thanks!

Signed-off-by: WANG Cong <amwang@...hat.com>




View attachment "proc-file-write-permission-fix2.diff" of type "text/plain" (423 bytes)