lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Sat, 17 Jan 2015 07:49:21 +1100 From: Herbert Xu <herbert@...dor.apana.org.au> To: Patrick McHardy <kaber@...sh.net> Cc: Thomas Graf <tgraf@...g.ch>, David Laight <David.Laight@...LAB.COM>, "davem@...emloft.net" <davem@...emloft.net>, "netdev@...r.kernel.org" <netdev@...r.kernel.org>, "paulmck@...ux.vnet.ibm.com" <paulmck@...ux.vnet.ibm.com>, "edumazet@...gle.com" <edumazet@...gle.com>, "john.r.fastabend@...el.com" <john.r.fastabend@...el.com>, "josh@...htriplett.org" <josh@...htriplett.org>, "netfilter-devel@...r.kernel.org" <netfilter-devel@...r.kernel.org> Subject: Re: [PATCH 7/9] rhashtable: Per bucket locks & deferred expansion/shrinking On Fri, Jan 16, 2015 at 07:35:57PM +0000, Patrick McHardy wrote: > > Well, rhashtable (or generally resizing) will make it a lot worse. > Usually we at worst miss entries which were added during the dump, > which is made up by the notifications. > > With resizing we might miss anything, its completely undeterministic. Correct. If you want to have a stable dump you will need to have data structure outside the hash table. For example, with xfrm_state we do it with a linked list. Cheers, -- Email: Herbert Xu <herbert@...dor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt -- 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
Powered by blists - more mailing lists