linux-kernel - [RFC PATCH 1/6] debugfs: Add temporary "#define debugfs

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Message-ID: <20250210052039.144513-2-me@davidreaver.com>
Date: Sun,  9 Feb 2025 21:20:21 -0800
From: David Reaver <me@...idreaver.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J . Wysocki" <rafael@...nel.org>,
	Danilo Krummrich <dakr@...nel.org>
Cc: David Reaver <me@...idreaver.com>,
	Steven Rostedt <rostedt@...dmis.org>,
	Christian Brauner <brauner@...nel.org>,
	Alexander Viro <viro@...iv.linux.org.uk>,
	linux-fsdevel@...r.kernel.org,
	cocci@...ia.fr,
	linux-kernel@...r.kernel.org
Subject: [RFC PATCH 1/6] debugfs: Add temporary "#define debugfs_node dentry" directives

Add some temporary "#define debugfs_node dentry" directives to facilitate
migrating debugfs APIs from dentry to a new opaque descriptor,
debugfs_node. Subsequent commits that replace dentry with debugfs_node rely
on these #defines until the final commit in this series removes them.

This is also added to dcache.h, right below struct dentry, so it is
available where dentry is transitively included.

Signed-off-by: David Reaver <me@...idreaver.com>
---
 include/linux/dcache.h  | 2 ++
 include/linux/debugfs.h | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 4afb60365675..4b0c11cd3d50 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -127,6 +127,8 @@ struct dentry {
 	} d_u;
 };
 
+#define debugfs_node dentry
+
 /*
  * dentry->d_lock spinlock nesting subclasses:
  *
diff --git a/include/linux/debugfs.h b/include/linux/debugfs.h
index fa2568b4380d..e6ee571e8c36 100644
--- a/include/linux/debugfs.h
+++ b/include/linux/debugfs.h
@@ -21,6 +21,8 @@
 struct device;
 struct file_operations;
 
+#define debugfs_node dentry
+
 struct debugfs_blob_wrapper {
 	void *data;
 	unsigned long size;