tree e0a36b2c0879b531ccd9f0e8707e59afbc474f7b
parent e905eabc90a5b787d8708df164543ee295bea5f2
author Herbert Xu <herbert@gondor.apana.org.au> 1450493128 +0800
committer David S. Miller <davem@davemloft.net> 1450500258 -0500

rhashtable: Kill harmless RCU warning in rhashtable_walk_init

The commit c6ff5268293ef98e48a99597e765ffc417e39fa5 ("rhashtable:
Fix walker list corruption") causes a suspicious RCU usage warning
because we no longer hold ht->mutex when we dereference ht->tbl.

However, this is a false positive because we now hold ht->lock
which also guarantees that ht->tbl won't disppear from under us.

This patch kills the warning by using rcu_dereference_protected.

Reported-by: kernel test robot <ying.huang@linux.intel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: David S. Miller <davem@davemloft.net>