debugfs: make __create_file static

It's only used locally, no need to pollute global namespace.

Signed-off-by: Chris Wright <chrisw@sous-sol.org>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/fs/debugfs/inode.c b/fs/debugfs/inode.c
index 4733eab..2c9fafb 100644
--- a/fs/debugfs/inode.c
+++ b/fs/debugfs/inode.c
@@ -291,9 +291,9 @@
 	.kill_sb =	kill_litter_super,
 };
 
-struct dentry *__create_file(const char *name, umode_t mode,
-				   struct dentry *parent, void *data,
-				   const struct file_operations *fops)
+static struct dentry *__create_file(const char *name, umode_t mode,
+				    struct dentry *parent, void *data,
+				    const struct file_operations *fops)
 {
 	struct dentry *dentry = NULL;
 	int error;