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Re: Lockdep rtnl_mutex and genl_mutex circular dependency

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On Mon, 2009-02-23 at 22:35 -0800, Johannes Berg wrote:

> pre_dumpit does rtnl_lock(), and netlink_dump_start() will re-do
> genl_lock(), so here we end up with a dependency of rtnl -> genl. But
> in the non-dump path, we do the pre_doit() with genl held, getting
> genl -> rtnl. We thus have to change the genetlink change, patch coming
> in a minute.

It's actually harder than I thought -- I need to try to understand the
genl locking more, but not today.

johannes

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