diff options
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/clnt.c | 14 | ||||
| -rw-r--r-- | net/sunrpc/sched.c | 28 | ||||
| -rw-r--r-- | net/sunrpc/xprt.c | 4 |
3 files changed, 29 insertions, 17 deletions
diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c index 8ff11dc98d7f..18f5392aa550 100644 --- a/net/sunrpc/clnt.c +++ b/net/sunrpc/clnt.c @@ -827,14 +827,8 @@ void rpc_killall_tasks(struct rpc_clnt *clnt) * Spin lock all_tasks to prevent changes... */ spin_lock(&clnt->cl_lock); - list_for_each_entry(rovr, &clnt->cl_tasks, tk_task) { - if (!RPC_IS_ACTIVATED(rovr)) - continue; - if (!(rovr->tk_flags & RPC_TASK_KILLED)) { - rovr->tk_flags |= RPC_TASK_KILLED; - rpc_exit(rovr, -EIO); - } - } + list_for_each_entry(rovr, &clnt->cl_tasks, tk_task) + rpc_signal_task(rovr); spin_unlock(&clnt->cl_lock); } EXPORT_SYMBOL_GPL(rpc_killall_tasks); @@ -1477,8 +1471,6 @@ EXPORT_SYMBOL_GPL(rpc_force_rebind); int rpc_restart_call_prepare(struct rpc_task *task) { - if (RPC_ASSASSINATED(task)) - return 0; task->tk_action = call_start; task->tk_status = 0; if (task->tk_ops->rpc_call_prepare != NULL) @@ -1494,8 +1486,6 @@ EXPORT_SYMBOL_GPL(rpc_restart_call_prepare); int rpc_restart_call(struct rpc_task *task) { - if (RPC_ASSASSINATED(task)) - return 0; task->tk_action = call_start; task->tk_status = 0; return 1; diff --git a/net/sunrpc/sched.c b/net/sunrpc/sched.c index 28956c70100a..3d6cb91ba598 100644 --- a/net/sunrpc/sched.c +++ b/net/sunrpc/sched.c @@ -759,8 +759,7 @@ static void rpc_reset_task_statistics(struct rpc_task *task) { task->tk_timeouts = 0; - task->tk_flags &= ~(RPC_CALL_MAJORSEEN|RPC_TASK_KILLED|RPC_TASK_SENT); - + task->tk_flags &= ~(RPC_CALL_MAJORSEEN|RPC_TASK_SENT); rpc_init_task_statistics(task); } @@ -773,7 +772,6 @@ void rpc_exit_task(struct rpc_task *task) if (task->tk_ops->rpc_call_done != NULL) { task->tk_ops->rpc_call_done(task, task->tk_calldata); if (task->tk_action != NULL) { - WARN_ON(RPC_ASSASSINATED(task)); /* Always release the RPC slot and buffer memory */ xprt_release(task); rpc_reset_task_statistics(task); @@ -781,6 +779,19 @@ void rpc_exit_task(struct rpc_task *task) } } +void rpc_signal_task(struct rpc_task *task) +{ + struct rpc_wait_queue *queue; + + if (!RPC_IS_ACTIVATED(task)) + return; + set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); + smp_mb__after_atomic(); + queue = READ_ONCE(task->tk_waitqueue); + if (queue) + rpc_wake_up_queued_task_set_status(queue, task, -ERESTARTSYS); +} + void rpc_exit(struct rpc_task *task, int status) { task->tk_status = status; @@ -836,6 +847,13 @@ static void __rpc_execute(struct rpc_task *task) */ if (!RPC_IS_QUEUED(task)) continue; + + /* + * Signalled tasks should exit rather than sleep. + */ + if (RPC_SIGNALLED(task)) + rpc_exit(task, -ERESTARTSYS); + /* * The queue->lock protects against races with * rpc_make_runnable(). @@ -861,7 +879,7 @@ static void __rpc_execute(struct rpc_task *task) status = out_of_line_wait_on_bit(&task->tk_runstate, RPC_TASK_QUEUED, rpc_wait_bit_killable, TASK_KILLABLE); - if (status == -ERESTARTSYS) { + if (status < 0) { /* * When a sync task receives a signal, it exits with * -ERESTARTSYS. In order to catch any callbacks that @@ -869,7 +887,7 @@ static void __rpc_execute(struct rpc_task *task) * break the loop here, but go around once more. */ dprintk("RPC: %5u got signal\n", task->tk_pid); - task->tk_flags |= RPC_TASK_KILLED; + set_bit(RPC_TASK_SIGNALLED, &task->tk_runstate); rpc_exit(task, -ERESTARTSYS); } dprintk("RPC: %5u sync task resuming\n", task->tk_pid); diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index d7117d241460..3a4156cb0134 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -1337,6 +1337,10 @@ xprt_request_transmit(struct rpc_rqst *req, struct rpc_task *snd_task) if (status < 0) goto out_dequeue; } + if (RPC_SIGNALLED(task)) { + status = -ERESTARTSYS; + goto out_dequeue; + } } /* |