[27/74] SUNRPC: Add barriers to ensure read ordering in rpc_wake_up_task_queue_locked

3.2.43-rc1 review patch. If anyone has any objections, please let me know. -- From: Trond Myklebust commit 1166fde6a923c30f4351515b6a9a1efc513e7d00 upstream. We need to be careful when testing task->tk_waitqueue in rpc_wake_up_task_queue_locked, because it can be changed

[27/74] SUNRPC: Add barriers to ensure read ordering in rpc_wake_up_task_queue_locked

3.2.43-rc1 review patch. If anyone has any objections, please let me know. -- From: Trond Myklebust trond.mykleb...@netapp.com commit 1166fde6a923c30f4351515b6a9a1efc513e7d00 upstream. We need to be careful when testing task-tk_waitqueue in rpc_wake_up_task_queue_locked,