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Commit cd3fadec authored Oct 17, 2013 by Chuck Lever Committed by Trond Myklebust Oct 28, 2013

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: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: Trond 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