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Re: [PATCH] mac80211: protect AP VLAN list with local->mtx

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On Wed, 2014-03-05 at 13:14 +0100, Michal Kazior wrote:
> It was impossible to change chanctx of master AP
> for AP VLANs because the copy function requires
> RTNL which can't be simply taken in mac80211 code
> due to possible deadlocks.
> 
> This is required for future chanctx reservation
> that re-bind vifs to new chanctx. This requires
> safe AP VLAN iteration without RTNL.
> 
> Now VLANs can be iterated while holding either
> RTNL or local->mtx because the list is modified
> while holding both of these locks.

No objection really, but maybe it would make more sense to use
iflist_mtx?

johannes

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