NFS: Add a boot parameter to disable 64 bit inode numbers

This boot parameter will allow legacy 32-bit applications which call stat()
to continue to function even if the NFSv3/v4 server uses 64-bit inode
numbers.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>

fs/nfs/dir.c

@@ -427,7 +427,8 @@ int nfs_do_filldir(nfs_readdir_descriptor_t *desc, void *dirent,
 		}
 
 		res = filldir(dirent, entry->name, entry->len, 
-			      file->f_pos, fileid, d_type);
+			      file->f_pos, nfs_compat_user_ino64(fileid),
+			      d_type);
 		if (res < 0)
 			break;
 		file->f_pos++;