netdev - Re: [PATCHv2 ipsec-next] xfrm: Namespacify xfrm_policy_sk

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Message-ID: <1387345485.19078.299.camel@edumazet-glaptop2.roam.corp.google.com>
Date:	Tue, 17 Dec 2013 21:44:45 -0800
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Fan Du <fan.du@...driver.com>
Cc:	steffen.klassert@...unet.com, davem@...emloft.net,
	netdev@...r.kernel.org
Subject: Re: [PATCHv2 ipsec-next] xfrm: Namespacify xfrm_policy_sk_bundles

On Wed, 2013-12-18 at 13:33 +0800, Fan Du wrote:

> Hi Eric
> 
> Thanks for your attention,
> I'm not follow why xchg here is unsafe, could you please elaborate a bit more?

Read include/linux/llist.h and llist_add_batch() implementation,
it will be very clear why your implementation is not safe.




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