Merge branch 'rhashtable-Fix-unprotected-RCU-dereference-in-__rht_ptr'

Merge branch 'rhashtable-Fix-unprotected-RCU-dereference-in-__rht_ptr'

Herbert Xu says:

====================
rhashtable: Fix unprotected RCU dereference in __rht_ptr

This patch series fixes an unprotected dereference in __rht_ptr.
The first patch is a minimal fix that does not use the correct
RCU markings but is suitable for backport, and the second patch
cleans up the RCU markings.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>