[PATCH] nvme: fix lockdep warning in nvme_mpath_clear_current_path

[Johannes Thumshirn]

On Mon, May 14, 2018 at 06:31:05AM -0700, Paul E. McKenney wrote:
> If you are just looking at the value of an RCU-protected pointer, then
> using rcu_access_pointer() will cause RCU to just read out the value
> and otherwise keeps its mouth shut.
> 
> If you use rcu_access_pointer() and later dereference the value without
> protection, you will of course get what you deserve, good and hard.  ;-)

Thanks Paul.

Christoph, I'll be sending the v2 probably tomorrow as I have more
lockdep fixes for nvme in the pipe and I'll send them out as a
complete series.

-- 
Johannes Thumshirn                                          Storage
jthumshirn at suse.de                                +49 911 74053 689
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: Felix Imendörffer, Jane Smithard, Graham Norton
HRB 21284 (AG Nürnberg)
Key fingerprint = EC38 9CAB C2C4 F25D 8600 D0D0 0393 969D 2D76 0850