NFSv4: Handle the condition NFS4ERR_FILE_OPEN

Retry a few times before we give up: the error is usually due to ordering
issues with asynchronous RPC calls.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index c218cc450b92..c49ac3ea1dc3 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -2891,6 +2891,7 @@ int nfs4_handle_exception(const struct nfs_server *server, int errorcode, struct
                         if (ret == 0)
                                 exception->retry = 1;
                         break;
+                case -NFS4ERR_FILE_OPEN:
                 case -NFS4ERR_GRACE:
                 case -NFS4ERR_DELAY:
                         ret = nfs4_delay(server->client, &exception->timeout);