NFS: Add debugging messages to NFSv4's CLOSE procedure

CLOSE is new with NFSv4.  Sometimes it's important to know the timing
of this operation compared to things like lease renewal.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 90a17cc3ebc9cefb2f3556d50233d7ad3a5c51f9..6c8e170e2e6bf941962255e6db0566c31bfece57 100644 (file)
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -1983,6 +1983,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
        struct nfs4_state *state = calldata->state;
        struct nfs_server *server = NFS_SERVER(calldata->inode);
 
+       dprintk("%s: begin!\n", __func__);
        if (!nfs4_sequence_done(task, &calldata->res.seq_res))
                return;
         /* hmm. we are done with the inode, and in the process of freeing
@@ -2010,6 +2011,7 @@ static void nfs4_close_done(struct rpc_task *task, void *data)
        }
        nfs_release_seqid(calldata->arg.seqid);
        nfs_refresh_inode(calldata->inode, calldata->res.fattr);
+       dprintk("%s: done, ret = %d!\n", __func__, task->tk_status);
 }
 
 static void nfs4_close_prepare(struct rpc_task *task, void *data)
@@ -2018,6 +2020,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
        struct nfs4_state *state = calldata->state;
        int call_close = 0;
 
+       dprintk("%s: begin!\n", __func__);
        if (nfs_wait_on_sequence(calldata->arg.seqid, task) != 0)
                return;
 
@@ -2042,7 +2045,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
        if (!call_close) {
                /* Note: exit _without_ calling nfs4_close_done */
                task->tk_action = NULL;
-               return;
+               goto out;
        }
 
        if (calldata->arg.fmode == 0) {
@@ -2051,7 +2054,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
                    pnfs_roc_drain(calldata->inode, &calldata->roc_barrier)) {
                        rpc_sleep_on(&NFS_SERVER(calldata->inode)->roc_rpcwaitq,
                                     task, NULL);
-                       return;
+                       goto out;
                }
        }
 
@@ -2061,8 +2064,10 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
                                &calldata->arg.seq_args,
                                &calldata->res.seq_res,
                                task))
-               return;
+               goto out;
        rpc_call_start(task);
+out:
+       dprintk("%s: done!\n", __func__);
 }
 
 static const struct rpc_call_ops nfs4_close_ops = {