diff mbox series

[v3,4/9] NFSv4: Handle RPC level errors in LAYOUTRETURN

Message ID 20190920112348.69496-5-trond.myklebust@hammerspace.com (mailing list archive)
State New, archived
Headers show
Series Various NFSv4 state error handling fixes | expand

Commit Message

Trond Myklebust Sept. 20, 2019, 11:23 a.m. UTC 
Handle RPC level errors by assuming that the RPC call was successful.

Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
---
 fs/nfs/nfs4proc.c |  9 +++++++++
 fs/nfs/pnfs.c     | 15 +++++++++++++++
 2 files changed, 24 insertions(+)
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Patch

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index fcdfddfd3ab4..a5deb00b5ad1 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -9057,6 +9057,15 @@  static void nfs4_layoutreturn_done(struct rpc_task *task, void *calldata)
 	if (!nfs41_sequence_process(task, &lrp->res.seq_res))
 		return;
 
+	/*
+	 * Was there an RPC level error? Assume the call succeeded,
+	 * and that we need to release the layout
+	 */
+	if (task->tk_rpc_status != 0 && RPC_WAS_SENT(task)) {
+		lrp->res.lrs_present = 0;
+		return;
+	}
+
 	server = NFS_SERVER(lrp->args.inode);
 	switch (task->tk_status) {
 	case -NFS4ERR_OLD_STATEID:
diff --git a/fs/nfs/pnfs.c b/fs/nfs/pnfs.c
index 6436047dc999..abc7188f1853 100644
--- a/fs/nfs/pnfs.c
+++ b/fs/nfs/pnfs.c
@@ -1455,6 +1455,21 @@  int pnfs_roc_done(struct rpc_task *task, struct inode *inode,
 	case 0:
 		retval = 0;
 		break;
+	case -NFS4ERR_NOMATCHING_LAYOUT:
+		/* Was there an RPC level error? If not, retry */
+		if (task->tk_rpc_status == 0)
+			break;
+		/* If the call was not sent, let caller handle it */
+		if (!RPC_WAS_SENT(task))
+			return 0;
+		/*
+		 * Otherwise, assume the call succeeded and
+		 * that we need to release the layout
+		 */
+		*ret = 0;
+		(*respp)->lrs_present = 0;
+		retval = 0;
+		break;
 	case -NFS4ERR_DELAY:
 		/* Let the caller handle the retry */
 		*ret = -NFS4ERR_NOMATCHING_LAYOUT;