Commit cd3fadec authored by Chuck Lever's avatar Chuck Lever Committed by Trond Myklebust
Browse files

NFS: Set EXCHGID4_FLAG_SUPP_MOVED_MIGR 



Broadly speaking, v4.1 migration is untested.  There are no servers
in the wild that support NFSv4.1 migration.  However, as server
implementations become available, we do want to enable testing by
developers, while leaving it disabled for environments for which
broken migration support would be an unpleasant surprise.

Signed-off-by: default avatarChuck Lever <chuck.lever@oracle.com>
Signed-off-by: default avatarTrond Myklebust <Trond.Myklebust@netapp.com>
parent d1c2331e

fs/nfs/Kconfig

+11 −0
Original line number Diff line number Diff line
@@ -140,6 +140,17 @@ config NFS_V4_1_IMPLEMENTATION_ID_DOMAIN 
	  If the NFS client is unchanged from the upstream kernel, this

	  option should be set to the default "kernel.org".



config NFS_V4_1_MIGRATION

	bool "NFSv4.1 client support for migration"

	depends on NFS_V4_1

	default n

	help

	  This option makes the NFS client advertise to NFSv4.1 servers that

          it can support NFSv4 migration.



          The NFSv4.1 pieces of the Linux NFSv4 migration implementation are

          still experimental.  If you are not an NFSv4 developer, say N here.



config NFS_V4_SECURITY_LABEL

	bool

	depends on NFS_V4_2 && SECURITY

fs/nfs/nfs4proc.c

+7 −1
Original line number Diff line number Diff line
@@ -6596,8 +6596,14 @@ static int _nfs4_proc_exchange_id(struct nfs_client *clp, struct rpc_cred *cred, 
	struct nfs41_exchange_id_args args = {

		.verifier = &verifier,

		.client = clp,

#ifdef CONFIG_NFS_V4_1_MIGRATION

		.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |

			 EXCHGID4_FLAG_BIND_PRINC_STATEID |

			 EXCHGID4_FLAG_SUPP_MOVED_MIGR,

#else

		.flags = EXCHGID4_FLAG_SUPP_MOVED_REFER |

			 EXCHGID4_FLAG_BIND_PRINC_STATEID,

#endif

	};

	struct nfs41_exchange_id_res res = {

		0

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