NFS: Remove NFS4_MOUNT_UNSHARED

This flag is numerically equivalent to NFS_MOUNT_UNSHARED, so I can
remove it to make collapsing functions more straightforward.
Signed-off-by: NBryan Schumaker <bjschuma@netapp.com>
Signed-off-by: NTrond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/super.c

@@ -2719,7 +2719,7 @@ nfs4_remote_mount(struct file_system_type *fs_type, int flags,
 	}
 	sb_mntdata.server = server;
 
-	if (server->flags & NFS4_MOUNT_UNSHARED)
+	if (server->flags & NFS_MOUNT_UNSHARED)
 		compare_super = NULL;
 
 	/* -o noac implies -o sync */
@@ -2983,7 +2983,7 @@ nfs4_xdev_mount(struct file_system_type *fs_type, int flags,
 	}
 	sb_mntdata.server = server;
 
-	if (server->flags & NFS4_MOUNT_UNSHARED)
+	if (server->flags & NFS_MOUNT_UNSHARED)
 		compare_super = NULL;
 
 	/* -o noac implies -o sync */
@@ -3074,7 +3074,7 @@ nfs4_remote_referral_mount(struct file_system_type *fs_type, int flags,
 	}
 	sb_mntdata.server = server;
 
-	if (server->flags & NFS4_MOUNT_UNSHARED)
+	if (server->flags & NFS_MOUNT_UNSHARED)
 		compare_super = NULL;
 
 	/* -o noac implies -o sync */