Re: [PATCH] device: separate all subsys mutexes (was: Re: [BUG]potential deadlock led by cpu_hotplug lock (memcg involved))

[Greg Kroah-Hartman]

On Tue, Mar 12, 2013 at 02:05:04PM +0100, Michal Hocko wrote:
> The fix is quite simple. We can pull the key inside bus_type structure
> because they are defined per device so the pointer will be unique as
> well. bus_register doesn't need to be a macro anymore so change it
> to the inline. We could get rid of __bus_register as there is no other
> caller but maybe somebody will want to use a different key so keep it
> around for now.

Nice work, but just drop __bus_register(), no one should need to use a
new key for this type of thing, now that you have added a per-bus_type
variable.

thanks,

greg k-h
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