Messages in this thread | | | Date | Mon, 22 Oct 2007 22:16:42 -0700 | From | Chris Wright <> | Subject | Re: LSM conversion to static interface [revert patch] |
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* Arjan van de Ven (arjan@infradead.org) wrote: > On Sun, 21 Oct 2007 08:57:06 +1000 (EST) > James Morris <jmorris@namei.org> wrote: > > > On Sat, 20 Oct 2007, Jan Engelhardt wrote: > > > > > >I'd like to note that I asked people who were actually affected, > > > >and had examples of their real-world use to step forward and > > > >explain their use, and that I explicitly mentioned that this is > > > >something we can easily re-visit. > > > > > > > > > > I do have a pseudo LSM called "multiadm" at > > > http://freshmeat.net/p/multiadm/ , quoting: > > > > > > > Based on Linus' criteria, this appears to be a case for reverting the > > static LSM patch. > > I don't want to argue for or against the actual revert; however if Linus/James/Chris > decide to do a revert, I've made a patch to do that below
Thanks Arjan. I did not actually oppose making it non-modular, and thought there was sufficient time for people to complain meaningfully on that change. I also think there's not a lot of value in the modular interface, but it's very difficult to have rational discussions in this area.
> (doing a full git revert is tricky since it gets mixed up with various other cleanup > patches; even inside the original patch. I've done the relevant pieces by hand via a > selective patch -R and compile-tested it). In addition I've made the modularity a > Kconfig option, since it's clearly something that is contested and thus is justified > as a user compile time choice; people who don't want this (out of paranoia or otherwise) > can now decide to disable, while others who want to experiment or use out of tree > LSM modules, can select the KConfig option. > > If it turns out that the above module becomes unmaintained and no longer usable, and no > other useful cases show up, we can always garbage collect this code in the future; it's > now low-overhead anyway for those who care, due to the KConfig option.
Yes, and I think we can still improve performance although I can't see anyway to help out the modular case, so I guess it will have to incur the hit that's always been there. I think your Kconfig option is a decent compromise.
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