diff options
| author |   Chuck Lever <cel@netapp.com> | 2005-08-25 16:25:53 -0700 |
|---|---|---|
| committer |   Trond Myklebust <Trond.Myklebust@netapp.com> | 2005-09-23 12:38:45 -0400 |
| commit | a58dd398f5db4f73d5c581069fd70a4304cc4f0a (patch) | |
| tree | 09e290d351c043392e7a2f8e0bc77aba90ff88ad /net/sunrpc/xprt.c | |
| parent | [PATCH] RPC: add generic interface for adjusting the congestion window (diff) | |
| download | linux-dev-a58dd398f5db4f73d5c581069fd70a4304cc4f0a.tar.xz linux-dev-a58dd398f5db4f73d5c581069fd70a4304cc4f0a.zip | |
[PATCH] RPC: add a release_rqst callout to the RPC transport switch
The final place where congestion control state is adjusted is in
xprt_release, where each request is finally released. Add a callout
there to allow transports to perform additional processing when a
request is about to be released.
Test-plan:
Use WAN simulation to cause sporadic bursty packet loss. Look for significant
regression in performance or client stability.
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 | 14 |
1 files changed, 13 insertions, 1 deletions
diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c index 707806fe1a23..e8d11bd6158e 100644 --- a/net/sunrpc/xprt.c +++ b/net/sunrpc/xprt.c @@ -290,6 +290,17 @@ __xprt_put_cong(struct rpc_xprt *xprt, struct rpc_rqst *req) } /** + * xprt_release_rqst_cong - housekeeping when request is complete + * @task: RPC request that recently completed + * + * Useful for transports that require congestion control. + */ +void xprt_release_rqst_cong(struct rpc_task *task) +{ + __xprt_put_cong(task->tk_xprt, task->tk_rqstp); +} + +/** * xprt_adjust_cwnd - adjust transport congestion window * @task: recently completed RPC request used to adjust window * @result: result code of completed RPC request @@ -823,7 +834,8 @@ void xprt_release(struct rpc_task *task) return; spin_lock_bh(&xprt->transport_lock); xprt->ops->release_xprt(xprt, task); - __xprt_put_cong(xprt, req); + if (xprt->ops->release_request) + xprt->ops->release_request(task); if (!list_empty(&req->rq_list)) list_del(&req->rq_list); xprt->last_used = jiffies; |