Merge branch 'rhashtable-fixes-next'

Herbert Xu says:

====================
rhashtable: Fix two bugs caused by multiple rehash preparation

While testing some new patches over the weekend I discovered a
couple of bugs in the series that had just been merged.  These
two patches fix them:

1) A use-after-free in the walker that can cause crashes when
walking during a rehash.

2) When a second rehash starts during a single rhashtable_remove
call the remove may fail when it shouldn't.
====================

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