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Date: Wed, 23 Jan 2008 23:27:47 -0800 (PST) From: David Miller <davem@...emloft.net> To: shemminger@...ux-foundation.org Cc: kaber@...sh.net, netdev@...r.kernel.org Subject: Re: [IPV4 3/5] fib_trie: dump doesnt use RCU From: Stephen Hemminger <shemminger@...ux-foundation.org> Date: Wed, 23 Jan 2008 22:45:02 -0800 > Yes, I tested, no the assert didn't hit... Actually, the reason I went > down this path was > because I couldn't trigger -EBUSY with concurrent updates. > > P.s: I checked and Quagga handles -EAGAIN, so if you need an error code that > would be the one to use. Ok, but see my other email, the -EBUSY block can't be removed. Even though for any given ->dump() call RTNL is held, it is dropped before the next ->dump() call on the same piece of nlk->cb[] state. So the node for the nlk->cb->args[2] key can go away due to an intervening table change. -- 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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