oprofilefs_create_...() do not need superblock argument

same story as with oprofilefs_mkdir()

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
diff --git a/drivers/oprofile/oprofile_files.c b/drivers/oprofile/oprofile_files.c
index 07462a9..ee2cfce 100644
--- a/drivers/oprofile/oprofile_files.c
+++ b/drivers/oprofile/oprofile_files.c
@@ -183,17 +183,17 @@
 	oprofile_buffer_watershed =	BUFFER_WATERSHED_DEFAULT;
 	oprofile_time_slice =		msecs_to_jiffies(TIME_SLICE_DEFAULT);
 
-	oprofilefs_create_file(root->d_sb, root, "enable", &enable_fops);
-	oprofilefs_create_file_perm(root->d_sb, root, "dump", &dump_fops, 0666);
-	oprofilefs_create_file(root->d_sb, root, "buffer", &event_buffer_fops);
-	oprofilefs_create_ulong(root->d_sb, root, "buffer_size", &oprofile_buffer_size);
-	oprofilefs_create_ulong(root->d_sb, root, "buffer_watershed", &oprofile_buffer_watershed);
-	oprofilefs_create_ulong(root->d_sb, root, "cpu_buffer_size", &oprofile_cpu_buffer_size);
-	oprofilefs_create_file(root->d_sb, root, "cpu_type", &cpu_type_fops);
-	oprofilefs_create_file(root->d_sb, root, "backtrace_depth", &depth_fops);
-	oprofilefs_create_file(root->d_sb, root, "pointer_size", &pointer_size_fops);
+	oprofilefs_create_file(root, "enable", &enable_fops);
+	oprofilefs_create_file_perm(root, "dump", &dump_fops, 0666);
+	oprofilefs_create_file(root, "buffer", &event_buffer_fops);
+	oprofilefs_create_ulong(root, "buffer_size", &oprofile_buffer_size);
+	oprofilefs_create_ulong(root, "buffer_watershed", &oprofile_buffer_watershed);
+	oprofilefs_create_ulong(root, "cpu_buffer_size", &oprofile_cpu_buffer_size);
+	oprofilefs_create_file(root, "cpu_type", &cpu_type_fops);
+	oprofilefs_create_file(root, "backtrace_depth", &depth_fops);
+	oprofilefs_create_file(root, "pointer_size", &pointer_size_fops);
 #ifdef CONFIG_OPROFILE_EVENT_MULTIPLEX
-	oprofilefs_create_file(root->d_sb, root, "time_slice", &timeout_fops);
+	oprofilefs_create_file(root, "time_slice", &timeout_fops);
 #endif
 	oprofile_create_stats_files(root);
 	if (oprofile_ops.create_files)