diff options
| -rw-r--r-- | fs/nfs/client.c | 4 | ||||
| -rw-r--r-- | fs/nfs/nfs4_fs.h | 13 |
2 files changed, 17 insertions, 0 deletions
diff --git a/fs/nfs/client.c b/fs/nfs/client.c index 280d41f64a5..d5c5bdfa423 100644 --- a/fs/nfs/client.c +++ b/fs/nfs/client.c @@ -1453,6 +1453,10 @@ static int nfs4_server_common_setup(struct nfs_server *server, BUG_ON(!server->nfs_client->rpc_ops); BUG_ON(!server->nfs_client->rpc_ops->file_inode_ops); + /* data servers support only a subset of NFSv4.1 */ + if (is_ds_only_client(server->nfs_client)) + return -EPROTONOSUPPORT; + fattr = nfs_alloc_fattr(); if (fattr == NULL) return -ENOMEM; diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h index 1be36cf65bf..d4cfacc4000 100644 --- a/fs/nfs/nfs4_fs.h +++ b/fs/nfs/nfs4_fs.h @@ -259,6 +259,13 @@ extern int nfs4_proc_destroy_session(struct nfs4_session *); extern int nfs4_init_session(struct nfs_server *server); extern int nfs4_proc_get_lease_time(struct nfs_client *clp, struct nfs_fsinfo *fsinfo); + +static inline bool +is_ds_only_client(struct nfs_client *clp) +{ + return (clp->cl_exchange_flags & EXCHGID4_FLAG_MASK_PNFS) == + EXCHGID4_FLAG_USE_PNFS_DS; +} #else /* CONFIG_NFS_v4_1 */ static inline struct nfs4_session *nfs4_get_session(const struct nfs_server *server) { @@ -276,6 +283,12 @@ static inline int nfs4_init_session(struct nfs_server *server) { return 0; } + +static inline bool +is_ds_only_client(struct nfs_client *clp) +{ + return false; +} #endif /* CONFIG_NFS_V4_1 */ extern const struct nfs4_minor_version_ops *nfs_v4_minor_ops[]; |