[Cocci] [PATCH] debugfs_simple_attr.cocci: add clarifying information

[Julia Lawall]

The referenced commit gives some information about the overhead
reduced by this change.

Signed-off-by: Julia Lawall <***@lip6.fr>

---
scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci | 2 ++
1 file changed, 2 insertions(+)

diff --git a/scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci b/scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
index 7c31231..6ff97e2 100644
--- a/scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
+++ b/scripts/coccinelle/api/debugfs/debugfs_simple_attr.cocci
@@ -5,6 +5,8 @@
//# Rationale: DEFINE_SIMPLE_ATTRIBUTE + debugfs_create_file()
//# imposes some significant overhead as compared to
//# DEFINE_DEBUGFS_ATTRIBUTE + debugfs_create_file_unsafe().
+//# See commit c64688081490 ("debugfs: add support for self-protecting
+//# attribute file fops") for further information.
//
// Copyright (C): 2016 Nicolai Stange
// Options: --no-includes