[PATCH v1 19/19] NFS: Set EXCHGID4_FLAG_SUPP_MOVED_MIGR

[Chuck Lever <chuck.lever@oracle.com>]

We have all the pieces in place to support NFSv4 minor version 1
migration in our client.  The client should advertise its support
for migration.

Note that v4.1 migration is untested.  There are no servers in the
wild that support NFSv4.1 migration.

Signed-off-by: Chuck Lever <chuck.lever@oracle.com>
---
 fs/nfs/nfs4proc.c |    9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/fs/nfs/nfs4proc.c b/fs/nfs/nfs4proc.c
index 80afb9f..8d0fab7 100644
--- a/fs/nfs/nfs4proc.c
+++ b/fs/nfs/nfs4proc.c
@@ -5876,8 +5876,10 @@ out:
 	return status;
 }
 
-/*
- * nfs4_proc_exchange_id()
+/**
+ * nfs4_proc_exchange_id - Instantiate client ID
+ * @clp: server state
+ * @cred: RPC credential to use for this call
  *
  * Returns zero, a negative errno, or a negative NFS4ERR status code.
  *
@@ -5892,7 +5894,8 @@ int nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred)
 	struct nfs41_exchange_id_args args = {
 		.verifier = &verifier,
 		.client = clp,
-		.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER,
+		.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |
+			 EXCHGID4_FLAG_SUPP_MOVED_MIGR,
 	};
 	struct nfs41_exchange_id_res res = {
 		0