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| author | Thomas Gleixner <tglx@linutronix.de> | 2013-04-24 20:33:46 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2013-04-24 20:33:54 +0200 |
| commit | 6402c7dc2a19c19bd8cdc7d80878b850da418942 (patch) | |
| tree | cda2ea2df40442e2aa016119f3548cc504127ea8 /net/sunrpc/sched.c | |
| parent | 77c675ba18836802f6b73d2d773481d06ebc0f04 (diff) | |
| parent | 60d509fa6a9c4653a86ad830e4c4b30360b23f0e (diff) | |
Merge branch 'linus' into timers/core
Reason: Get upstream fixes before adding conflicting code.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'net/sunrpc/sched.c')
| -rw-r--r-- | net/sunrpc/sched.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index fb20f25ddec9..f8529fc8e542 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -180,6 +180,8 @@ static void __rpc_add_wait_queue(struct rpc_wait_queue *queue, list_add_tail(&task->u.tk_wait.list, &queue->tasks[0]); task->tk_waitqueue = queue; queue->qlen++; + /* barrier matches the read in rpc_wake_up_task_queue_locked() */ + smp_wmb(); rpc_set_queued(task); dprintk("RPC: %5u added to queue %p \"%s\"\n", @@ -430,8 +432,11 @@ static void __rpc_do_wake_up_task(struct rpc_wait_queue *queue, struct rpc_task */ static void rpc_wake_up_task_queue_locked(struct rpc_wait_queue *queue, struct rpc_task *task) { - if (RPC_IS_QUEUED(task) && task->tk_waitqueue == queue) - __rpc_do_wake_up_task(queue, task); + if (RPC_IS_QUEUED(task)) { + smp_rmb(); + if (task->tk_waitqueue == queue) + __rpc_do_wake_up_task(queue, task); + } } /* |