| commit | 1166fde6a923c30f4351515b6a9a1efc513e7d00 | [log] [tgz] |
|---|---|---|
| author | Trond Myklebust <Trond.Myklebust@netapp.com> | Mon Mar 25 11:23:40 2013 -0400 |
| committer | Trond Myklebust <Trond.Myklebust@netapp.com> | Mon Mar 25 11:23:40 2013 -0400 |
| tree | c324a24baa26658651d2e1ecbf2771da569ff38b | |
| parent | 240286725d854331422cb15957f8d9bf2741d4e3 [diff] |
SUNRPC: Add barriers to ensure read ordering in rpc_wake_up_task_queue_locked We need to be careful when testing task->tk_waitqueue in rpc_wake_up_task_queue_locked, because it can be changed while we are holding the queue->lock. By adding appropriate memory barriers, we can ensure that it is safe to test task->tk_waitqueue for equality if the RPC_TASK_QUEUED bit is set. Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com> Cc: stable@vger.kernel.org