linux-kernel - Re: [PATCH 02/12] selinux: tag avc cache alloc as non-critical

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Message-ID: <4FABCD55.9000504@schaufler-ca.com>
Date:	Thu, 10 May 2012 07:14:45 -0700
From:	Casey Schaufler <casey@...aufler-ca.com>
To:	Mel Gorman <mgorman@...e.de>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Linux-MM <linux-mm@...ck.org>,
	Linux-Netdev <netdev@...r.kernel.org>,
	Linux-NFS <linux-nfs@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	David Miller <davem@...emloft.net>,
	Trond Myklebust <Trond.Myklebust@...app.com>,
	Neil Brown <neilb@...e.de>,
	Christoph Hellwig <hch@...radead.org>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	Mike Christie <michaelc@...wisc.edu>,
	Eric B Munson <emunson@...bm.net>,
	LSM <linux-security-module@...r.kernel.org>,
	SE Linux <selinux@...ho.nsa.gov>
Subject: Re: [PATCH 02/12] selinux: tag avc cache alloc as non-critical

On 5/10/2012 6:54 AM, Mel Gorman wrote:
> Failing to allocate a cache entry will only harm performance not
> correctness.  Do not consume valuable reserve pages for something
> like that.

Copying to the LSM and SELinux lists.
 
>
> Signed-off-by: Peter Zijlstra <a.p.zijlstra@...llo.nl>
> Signed-off-by: Mel Gorman <mgorman@...e.de>
> ---
>  security/selinux/avc.c |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/security/selinux/avc.c b/security/selinux/avc.c
> index 8ee42b2..75c2977 100644
> --- a/security/selinux/avc.c
> +++ b/security/selinux/avc.c
> @@ -280,7 +280,7 @@ static struct avc_node *avc_alloc_node(void)
>  {
>  	struct avc_node *node;
>  
> -	node = kmem_cache_zalloc(avc_node_cachep, GFP_ATOMIC);
> +	node = kmem_cache_zalloc(avc_node_cachep, GFP_ATOMIC|__GFP_NOMEMALLOC);
>  	if (!node)
>  		goto out;
>  

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