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Date: Fri, 14 Sep 2007 22:07:14 +0200 From: Stephen Hemminger <shemminger@...ux-foundation.org> To: ebiederm@...ssion.com (Eric W. Biederman) Cc: Pavel Emelyanov <xemul@...nvz.org>, Linux Netdev List <netdev@...r.kernel.org>, Linux Containers <containers@...ts.osdl.org>, devel@...nvz.org, Daniel Lezcano <dlezcano@...ibm.com> Subject: Re: [PATCH][NETNS] Use list_for_each_entry_continue_reverse in setup_net On Fri, 14 Sep 2007 08:41:07 -0600 ebiederm@...ssion.com (Eric W. Biederman) wrote: > Stephen Hemminger <shemminger@...ux-foundation.org> writes: > > > On Fri, 14 Sep 2007 11:39:32 +0400 > > Pavel Emelyanov <xemul@...nvz.org> wrote: > > > >> I proposed introducing a list_for_each_entry_continue_reverse > >> macro to be used in setup_net() when unrolling the failed > >> ->init callback. > >> > >> Here is the macro and some more cleanup in the setup_net() itself > >> to remove one variable from the stack :) Minor, but the code > >> looks nicer. > >> > >> Signed-off-by: Pavel Emelyanov <xemul@...nvz.org> > > > > Maybe it is time to just eliminate the init hook from the API. > > It has very few users, and there is no reason the setup needed > > could be done before or after registering in most cases. > > I guess only have 5 out of the 29 users I have in my full patchset > is few. But that is to be expected because so far only the core > has been converted. > > I looked again at the initialization to see if you had a point about > the initialization but in every instance I looked at the function > was performing work that needed to happen during the creation of > each network namespace. So the work very much needs to be done there. > > Ok looking some more I can see why this isn't obvious yet. copy_net_ns > hasn't been merged yet, and that is where we create new network namespaces. > And call setup_net on each new network namespace. > > I will take a look at that patch and see if I can come up with a > safe version of it to merge to allow for a little more transparency. Could we just make it so dev->init is not allowed to fail? Then it can be a void function and the nasty unwind code can go? - 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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