From 539f57b3e0fdaad20ddb0a45913cefee0c8c29c1 Mon Sep 17 00:00:00 2001
From: Olga Kornievskaia <kolga@netapp.com>
Date: Mon, 9 Jul 2018 15:13:35 -0400
Subject: [PATCH] NFS handle COPY ERR_OFFLOAD_NO_REQS
If client sent async COPY and server replied with
ERR_OFFLOAD_NO_REQS, client should retry with a synchronous copy.
Signed-off-by: Olga Kornievskaia <kolga@netapp.com>
Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
---
fs/nfs/nfs42proc.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/nfs/nfs42proc.c b/fs/nfs/nfs42proc.c
index aeb9837b7e40..77451be9d702 100644
--- a/fs/nfs/nfs42proc.c
+++ b/fs/nfs/nfs42proc.c
@@ -316,7 +316,11 @@ ssize_t nfs42_proc_copy(struct file *src, loff_t pos_src,
if (err == -ENOTSUPP) {
err = -EOPNOTSUPP;
break;
- } if (err == -EAGAIN) {
+ } else if (err == -EAGAIN) {
+ dst_exception.retry = 1;
+ continue;
+ } else if (err == -NFS4ERR_OFFLOAD_NO_REQS && !args.sync) {
+ args.sync = true;
dst_exception.retry = 1;
continue;
}