[PATCH 2/2] pNFS: Don't send layoutreturn if the layout is already invalid

[Trond Myklebust <trondmy@xxxxxxxxx>]

If the layout was invalidated due to a reboot, then don't try to send
a layoutreturn for it.

Signed-off-by: Trond Myklebust <trond.myklebust@xxxxxxxxxxxxxxx>
---
 fs/nfs/nfs4proc.c | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 2c8c2696415e..6dd146885da9 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -3294,6 +3294,7 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
 	struct nfs4_closedata *calldata = data;
 	struct nfs4_state *state = calldata->state;
 	struct inode *inode = calldata->inode;
+	struct pnfs_layout_hdr *lo;
 	bool is_rdonly, is_wronly, is_rdwr;
 	int call_close = 0;
 
@@ -3337,6 +3338,12 @@ static void nfs4_close_prepare(struct rpc_task *task, void *data)
 		goto out_wait;
 	}
 
+	lo = calldata->arg.lr_args ? calldata->arg.lr_args->layout : NULL;
+	if (lo && !pnfs_layout_is_valid(lo)) {
+		calldata->arg.lr_args = NULL;
+		calldata->res.lr_res = NULL;
+	}
+
 	if (calldata->arg.fmode == 0)
 		task->tk_msg.rpc_proc = &nfs4_procedures[NFSPROC4_CLNT_CLOSE];
 
@@ -5972,12 +5979,19 @@ static void nfs4_delegreturn_release(void *calldata)
 static void nfs4_delegreturn_prepare(struct rpc_task *task, void *data)
 {
 	struct nfs4_delegreturndata *d_data;
+	struct pnfs_layout_hdr *lo;
 
 	d_data = (struct nfs4_delegreturndata *)data;
 
 	if (!d_data->lr.roc && nfs4_wait_on_layoutreturn(d_data->inode, task))
 		return;
 
+	lo = d_data->args.lr_args ? d_data->args.lr_args->layout : NULL;
+	if (lo && !pnfs_layout_is_valid(lo)) {
+		d_data->args.lr_args = NULL;
+		d_data->res.lr_res = NULL;
+	}
+
 	nfs4_setup_sequence(d_data->res.server->nfs_client,
 			&d_data->args.seq_args,
 			&d_data->res.seq_res,
@@ -8820,6 +8834,8 @@ nfs4_layoutreturn_prepare(struct rpc_task *task, void *calldata)
 			&lrp->args.seq_args,
 			&lrp->res.seq_res,
 			task);
+	if (!pnfs_layout_is_valid(lrp->args.layout))
+		rpc_exit(task, 0);
 }
 
 static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
-- 
2.17.1

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