diff options
Diffstat (limited to 'net/sunrpc/xprt.c')
| -rw-r--r-- | net/sunrpc/xprt.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 247fa1ec870..31ef7dc7eed 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -241,6 +241,40 @@ void xprt_wake_pending_tasks(struct rpc_xprt *xprt, int status) rpc_wake_up(&xprt->pending); } +/** + * xprt_wait_for_buffer_space - wait for transport output buffer to clear + * @task: task to be put to sleep + * + */ +void xprt_wait_for_buffer_space(struct rpc_task *task) +{ + struct rpc_rqst *req = task->tk_rqstp; + struct rpc_xprt *xprt = req->rq_xprt; + + task->tk_timeout = req->rq_timeout; + rpc_sleep_on(&xprt->pending, task, NULL, NULL); +} + +/** + * xprt_write_space - wake the task waiting for transport output buffer space + * @xprt: transport with waiting tasks + * + * Can be called in a soft IRQ context, so xprt_write_space never sleeps. + */ +void xprt_write_space(struct rpc_xprt *xprt) +{ + if (unlikely(xprt->shutdown)) + return; + + spin_lock_bh(&xprt->transport_lock); + if (xprt->snd_task) { + dprintk("RPC: write space: waking waiting task on xprt %p\n", + xprt); + rpc_wake_up_task(xprt->snd_task); + } + spin_unlock_bh(&xprt->transport_lock); +} + static void xprt_reset_majortimeo(struct rpc_rqst *req) { struct rpc_timeout *to = &req->rq_xprt->timeout; |