commit 122a8cda6a9a3594c4737570f5cd81636bcd20cf
author NeilBrown <neilb@suse.de> Mon Aug 04 16:24:00 2014 +1000
committer Trond Myklebust <trond.myklebust@primarydata.com> Mon Aug 04 09:22:08 2014 -0400
tree 75d8f337b22e59e70d31670a7ebdbd47a8c00412
parent 50d77739fa1972030daf1c8902404551e49bf232

SUNRPC: remove all refcounting of groupinfo from rpcauth_lookupcred

current_cred() can only be changed by 'current', and
cred->group_info is never changed.  If a new group_info is
needed, a new 'cred' is created.

Consequently it is always safe to access
   current_cred()->group_info

without taking any further references.
So drop the refcounting and the incorrect rcu_dereference().

Signed-off-by: NeilBrown <neilb@suse.de>
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>