tree 8464850fd94dba0dfa34c75c46dfb3fcf4c3c381
parent b5e2c150ac914f28a28833b57397bec0b0a2bd5f
author Thomas Graf <tgraf@suug.ch> 1427203100 +0100
committer David S. Miller <davem@davemloft.net> 1427233720 -0400

rhashtable: Add rhashtable_free_and_destroy()

rhashtable_destroy() variant which stops rehashes, iterates over
the table and calls a callback to release resources.

Avoids need for nft_hash to embed rhashtable internals and allows to
get rid of the being_destroyed flag. It also saves a 2nd mutex
lock upon destruction.

Also fixes an RCU lockdep splash on nft set destruction due to
calling rht_for_each_entry_safe() without holding bucket locks.
Open code this loop as we need know that no mutations may occur in
parallel.

Signed-off-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>