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Date: Thu, 05 Feb 2009 23:45:20 -0800 (PST) From: David Miller <davem@...emloft.net> To: nicolas.dichtel@....6wind.com Cc: netdev@...r.kernel.org Subject: Re: [PATCH] netns: remove useless synchronize_net() From: Nicolas Dichtel <nicolas.dichtel@....6wind.com> Date: Thu, 05 Feb 2009 11:21:22 +0100 > In dev_change_net_namespace(), synchronize_net() is called at the > end of the function, but there is no reason (no deletion occurs). > > Signed-off-by: Nicolas Dichtel <nicolas.dichtel@...nd.com> It is necessary to make sure all cpus stop looking at the previous namespace the device was attached to, and only see the new mapping. That's why this function has two synchronize_net() calls. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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