linux-kernel - Re: [PATCH v2]oom-kill: CAP_SYS

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Message-ID: <alpine.DEB.2.00.1011031646110.7830@chino.kir.corp.google.com>
Date:	Wed, 3 Nov 2010 16:47:16 -0700 (PDT)
From:	David Rientjes <rientjes@...gle.com>
To:	"Figo.zhang" <figo1802@...il.com>
cc:	lkml <linux-kernel@...r.kernel.org>,
	"linux-mm@...ck.org" <linux-mm@...ck.org>,
	Andrew Morton <akpm@...l.org>
Subject: Re: [PATCH v2]oom-kill: CAP_SYS_RESOURCE should get bonus

On Thu, 4 Nov 2010, Figo.zhang wrote:

> CAP_SYS_RESOURCE also had better get 3% bonus for protection.
> 

Would you like to elaborate as to why?

> Signed-off-by: Figo.zhang <figo1802@...il.com>
> --- 
> mm/oom_kill.c |    3 ++-
>  1 files changed, 2 insertions(+), 1 deletions(-)
> 
> diff --git a/mm/oom_kill.c b/mm/oom_kill.c
> index 4029583..30b24b9 100644
> --- a/mm/oom_kill.c
> +++ b/mm/oom_kill.c
> @@ -198,7 +198,8 @@ unsigned int oom_badness(struct task_struct *p, struct mem_cgroup *mem,
>  	 * Root processes get 3% bonus, just like the __vm_enough_memory()
>  	 * implementation used by LSMs.
>  	 */
> -	if (has_capability_noaudit(p, CAP_SYS_ADMIN))
> +	if (has_capability_noaudit(p, CAP_SYS_ADMIN) ||
> +	    has_capability_noaudit(p, CAP_SYS_RESOURCE))
>  		points -= 30;
>  
>  	/*
--
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