SUNRPC: cleanup state-machine ordering

This is just a minor cleanup: net/sunrpc/clnt.c clarifies the rpc client
state machine by commenting each state and by laying out the functions
implementing each state in the order that each state is normally
executed (in the absence of errors).

The previous patch "Fix null dereference in call_allocate" changed the
order of the states.  Move the functions and update the comments to
reflect the change.

Signed-off-by: J. Bruce Fields <bfields@redhat.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/net/sunrpc/clnt.c b/net/sunrpc/clnt.c
index 3a8f53e7ba071057e6ec389c528ac7587cb7cddd..fa5549079d79ca7709d3a68bc686b77f10b08243 100644 (file)
--- a/net/sunrpc/clnt.c
+++ b/net/sunrpc/clnt.c
@@ -964,7 +964,48 @@ call_reserveresult(struct rpc_task *task)
 }
 
 /*
- * 2.  Allocate the buffer. For details, see sched.c:rpc_malloc.
+ * 2.  Bind and/or refresh the credentials
+ */
+static void
+call_refresh(struct rpc_task *task)
+{
+       dprint_status(task);
+
+       task->tk_action = call_refreshresult;
+       task->tk_status = 0;
+       task->tk_client->cl_stats->rpcauthrefresh++;
+       rpcauth_refreshcred(task);
+}
+
+/*
+ * 2a. Process the results of a credential refresh
+ */
+static void
+call_refreshresult(struct rpc_task *task)
+{
+       int status = task->tk_status;
+
+       dprint_status(task);
+
+       task->tk_status = 0;
+       task->tk_action = call_allocate;
+       if (status >= 0 && rpcauth_uptodatecred(task))
+               return;
+       switch (status) {
+       case -EACCES:
+               rpc_exit(task, -EACCES);
+               return;
+       case -ENOMEM:
+               rpc_exit(task, -ENOMEM);
+               return;
+       case -ETIMEDOUT:
+               rpc_delay(task, 3*HZ);
+       }
+       task->tk_action = call_refresh;
+}
+
+/*
+ * 2b. Allocate the buffer. For details, see sched.c:rpc_malloc.
  *     (Note: buffer memory is freed in xprt_release).
  */
 static void
@@ -1015,47 +1056,6 @@ call_allocate(struct rpc_task *task)
        rpc_exit(task, -ERESTARTSYS);
 }
 
-/*
- * 2a. Bind and/or refresh the credentials
- */
-static void
-call_refresh(struct rpc_task *task)
-{
-       dprint_status(task);
-
-       task->tk_action = call_refreshresult;
-       task->tk_status = 0;
-       task->tk_client->cl_stats->rpcauthrefresh++;
-       rpcauth_refreshcred(task);
-}
-
-/*
- * 2b. Process the results of a credential refresh
- */
-static void
-call_refreshresult(struct rpc_task *task)
-{
-       int status = task->tk_status;
-
-       dprint_status(task);
-
-       task->tk_status = 0;
-       task->tk_action = call_allocate;
-       if (status >= 0 && rpcauth_uptodatecred(task))
-               return;
-       switch (status) {
-       case -EACCES:
-               rpc_exit(task, -EACCES);
-               return;
-       case -ENOMEM:
-               rpc_exit(task, -ENOMEM);
-               return;
-       case -ETIMEDOUT:
-               rpc_delay(task, 3*HZ);
-       }
-       task->tk_action = call_refresh;
-}
-
 static inline int
 rpc_task_need_encode(struct rpc_task *task)
 {