NFS: include filelayout DS rpc stats in mountstats

Include RPC statistics from all data servers in /proc/self/mountstats for pNFS
filelayout mounts.

Signed-off-by: Weston Andros Adamson <dros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/net/sunrpc/xprt.c b/net/sunrpc/xprt.c
index 739df8a11382..32e37945a840 100644
--- a/net/sunrpc/xprt.c
+++ b/net/sunrpc/xprt.c
@@ -1137,7 +1137,10 @@ void xprt_release(struct rpc_task *task)
                 return;
 
         xprt = req->rq_xprt;
-        rpc_count_iostats(task);
+        if (task->tk_ops->rpc_count_stats != NULL)
+                task->tk_ops->rpc_count_stats(task, task->tk_calldata);
+        else if (task->tk_client)
+                rpc_count_iostats(task, task->tk_client->cl_metrics);
         spin_lock_bh(&xprt->transport_lock);
         xprt->ops->release_xprt(xprt, task);
         if (xprt->ops->release_request)