1 files changed, 31 insertions, 8 deletions

diff --git a/fs/nfs/nfs4filelayout.c b/fs/nfs/nfs4filelayout.c
index 17ed87e..b86464b 100644
--- a/fs/nfs/nfs4filelayout.c
+++ b/fs/nfs/nfs4filelayout.c
@@ -39,6 +39,7 @@
 #include "internal.h"
 #include "delegation.h"
 #include "nfs4filelayout.h"
+#include "nfs4trace.h"
 
 #define NFSDBG_FACILITY         NFSDBG_PNFS_LD
 
@@ -247,6 +248,7 @@ static int filelayout_read_done_cb(struct rpc_task *task,
 	struct nfs_pgio_header *hdr = data->header;
 	int err;
 
+	trace_nfs4_pnfs_read(data, task->tk_status);
 	err = filelayout_async_handle_error(task, data->args.context->state,
 					    data->ds_clp, hdr->lseg);
 
@@ -363,6 +365,7 @@ static int filelayout_write_done_cb(struct rpc_task *task,
 	struct nfs_pgio_header *hdr = data->header;
 	int err;
 
+	trace_nfs4_pnfs_write(data, task->tk_status);
 	err = filelayout_async_handle_error(task, data->args.context->state,
 					    data->ds_clp, hdr->lseg);
 
@@ -395,6 +398,7 @@ static int filelayout_commit_done_cb(struct rpc_task *task,
 {
 	int err;
 
+	trace_nfs4_pnfs_commit_ds(data, task->tk_status);
 	err = filelayout_async_handle_error(task, NULL, data->ds_clp,
 					    data->lseg);
 
@@ -524,6 +528,7 @@ filelayout_read_pagelist(struct nfs_read_data *data)
 	struct nfs_pgio_header *hdr = data->header;
 	struct pnfs_layout_segment *lseg = hdr->lseg;
 	struct nfs4_pnfs_ds *ds;
+	struct rpc_clnt *ds_clnt;
 	loff_t offset = data->args.offset;
 	u32 j, idx;
 	struct nfs_fh *fh;
@@ -538,6 +543,11 @@ filelayout_read_pagelist(struct nfs_read_data *data)
 	ds = nfs4_fl_prepare_ds(lseg, idx);
 	if (!ds)
 		return PNFS_NOT_ATTEMPTED;
+
+	ds_clnt = nfs4_find_or_create_ds_client(ds->ds_clp, hdr->inode);
+	if (IS_ERR(ds_clnt))
+		return PNFS_NOT_ATTEMPTED;
+
 	dprintk("%s USE DS: %s cl_count %d\n", __func__,
 		ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count));
 
@@ -552,7 +562,7 @@ filelayout_read_pagelist(struct nfs_read_data *data)
 	data->mds_offset = offset;
 
 	/* Perform an asynchronous read to ds */
-	nfs_initiate_read(ds->ds_clp->cl_rpcclient, data,
+	nfs_initiate_read(ds_clnt, data,
 				  &filelayout_read_call_ops, RPC_TASK_SOFTCONN);
 	return PNFS_ATTEMPTED;
 }
@@ -564,6 +574,7 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
 	struct nfs_pgio_header *hdr = data->header;
 	struct pnfs_layout_segment *lseg = hdr->lseg;
 	struct nfs4_pnfs_ds *ds;
+	struct rpc_clnt *ds_clnt;
 	loff_t offset = data->args.offset;
 	u32 j, idx;
 	struct nfs_fh *fh;
@@ -574,6 +585,11 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
 	ds = nfs4_fl_prepare_ds(lseg, idx);
 	if (!ds)
 		return PNFS_NOT_ATTEMPTED;
+
+	ds_clnt = nfs4_find_or_create_ds_client(ds->ds_clp, hdr->inode);
+	if (IS_ERR(ds_clnt))
+		return PNFS_NOT_ATTEMPTED;
+
 	dprintk("%s ino %lu sync %d req %Zu@%llu DS: %s cl_count %d\n",
 		__func__, hdr->inode->i_ino, sync, (size_t) data->args.count,
 		offset, ds->ds_remotestr, atomic_read(&ds->ds_clp->cl_count));
@@ -591,7 +607,7 @@ filelayout_write_pagelist(struct nfs_write_data *data, int sync)
 	data->args.offset = filelayout_get_dserver_offset(lseg, offset);
 
 	/* Perform an asynchronous write */
-	nfs_initiate_write(ds->ds_clp->cl_rpcclient, data,
+	nfs_initiate_write(ds_clnt, data,
 				    &filelayout_write_call_ops, sync,
 				    RPC_TASK_SOFTCONN);
 	return PNFS_ATTEMPTED;
@@ -1101,16 +1117,19 @@ static int filelayout_initiate_commit(struct nfs_commit_data *data, int how)
 {
 	struct pnfs_layout_segment *lseg = data->lseg;
 	struct nfs4_pnfs_ds *ds;
+	struct rpc_clnt *ds_clnt;
 	u32 idx;
 	struct nfs_fh *fh;
 
 	idx = calc_ds_index_from_commit(lseg, data->ds_commit_index);
 	ds = nfs4_fl_prepare_ds(lseg, idx);
-	if (!ds) {
-		prepare_to_resend_writes(data);
-		filelayout_commit_release(data);
-		return -EAGAIN;
-	}
+	if (!ds)
+		goto out_err;
+
+	ds_clnt = nfs4_find_or_create_ds_client(ds->ds_clp, data->inode);
+	if (IS_ERR(ds_clnt))
+		goto out_err;
+
 	dprintk("%s ino %lu, how %d cl_count %d\n", __func__,
 		data->inode->i_ino, how, atomic_read(&ds->ds_clp->cl_count));
 	data->commit_done_cb = filelayout_commit_done_cb;
@@ -1119,9 +1138,13 @@ static int filelayout_initiate_commit(struct nfs_commit_data *data, int how)
 	fh = select_ds_fh_from_commit(lseg, data->ds_commit_index);
 	if (fh)
 		data->args.fh = fh;
-	return nfs_initiate_commit(ds->ds_clp->cl_rpcclient, data,
+	return nfs_initiate_commit(ds_clnt, data,
 				   &filelayout_commit_call_ops, how,
 				   RPC_TASK_SOFTCONN);
+out_err:
+	prepare_to_resend_writes(data);
+	filelayout_commit_release(data);
+	return -EAGAIN;
 }
 
 static int