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author | Chuck Lever <cel@citi.umich.edu> | 2005-08-11 20:25:50 (GMT) |
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committer | Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-09-23 16:38:28 (GMT) |
commit | c7b2cae8a634015b72941ba2fc6c4bc9b8d3a129 (patch) | |
tree | 95f561877d67eed80a823daa6ef0c00ad1c060eb /net/sunrpc/xprt.c | |
parent | 55aa4f58aa43dc9a51fb80010630d94b96053a2e (diff) | |
download | linux-c7b2cae8a634015b72941ba2fc6c4bc9b8d3a129.tar.xz |
[PATCH] RPC: separate TCP and UDP write space callbacks
Split the socket write space callback function into a TCP version and UDP
version, eliminating one dependence on the "xprt->stream" variable.
Keep the common pieces of this path in xprt.c so other transports can use
it too.
Test-plan:
Write-intensive workload on a single mount point.
Version: Thu, 11 Aug 2005 16:07:51 -0400
Signed-off-by: Chuck Lever <cel@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
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 247fa1e..31ef7dc 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; |