NFSv4.1: add MDS mount DS only check
The DS only role cannot be used to mount.
Signed-off-by: Andy Adamson <andros@netapp.com>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
diff --git a/fs/nfs/nfs4_fs.h b/fs/nfs/nfs4_fs.h
index 1be36cf..d4cfacc 100644
--- a/fs/nfs/nfs4_fs.h
+++ b/fs/nfs/nfs4_fs.h
@@ -259,6 +259,13 @@
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 @@
{
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[];